638400204

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:262

約数の個数: 180

約数和(自身を含む): 1841411880

約数和(自身を除く): 1203011676

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 89, 108, 117, 131, 156, 162, 169, 178, 234, 262, 267, 324, 338, 351, 356, 393, 468, 507, 524, 534, 676, 702, 786, 801, 1014, 1053, 1068, 1157, 1179, 1404, 1521, 1572, 1602, 1703, 2028, 2106, 2314, 2358, 2403, 3042, 3204, 3406, 3471, 3537, 4212, 4563, 4628, 4716, 4806, 5109, 6084, 6812, 6942, 7074, 7209, 9126, 9612, 10218, 10413, 10611, 11659, 13689, 13884, 14148, 14418, 15041, 15327, 18252, 20436, 20826, 21222, 22139, 23318, 27378, 28836, 30082, 30654, 31239, 34977, 41652, 42444, 44278, 45123, 45981, 46636, 54756, 60164, 61308, 62478, 66417, 69954, 88556, 90246, 91962, 93717, 104931, 124956, 132834, 135369, 137943, 139908, 151567, 180492, 183924, 187434, 199251, 209862, 265668, 270738, 275886, 303134, 314793, 374868, 398502, 406107, 419724, 454701, 541476, 551772, 597753, 606268, 629586, 797004, 812214, 909402, 944379, 1195506, 1218321, 1259172, 1364103, 1624428, 1793259, 1818804, 1888758, 1970371, 2391012, 2436642, 2728206, 3586518, 3777516, 3940742, 4092309, 4873284, 5456412, 5911113, 7173036, 7881484, 8184618, 11822226, 12276927, 16369236, 17733339, 23644452, 24553854, 35466678, 49107708, 53200017, 70933356, 106400034, 159600051, 212800068, 319200102, 638400204]

約数ペア:

[(1, 638400204), (2, 319200102), (3, 212800068), (4, 159600051), (6, 106400034), (9, 70933356), (12, 53200017), (13, 49107708), (18, 35466678), (26, 24553854), (27, 23644452), (36, 17733339), (39, 16369236), (52, 12276927), (54, 11822226), (78, 8184618), (81, 7881484), (89, 7173036), (108, 5911113), (117, 5456412), (131, 4873284), (156, 4092309), (162, 3940742), (169, 3777516), (178, 3586518), (234, 2728206), (262, 2436642), (267, 2391012), (324, 1970371), (338, 1888758), (351, 1818804), (356, 1793259), (393, 1624428), (468, 1364103), (507, 1259172), (524, 1218321), (534, 1195506), (676, 944379), (702, 909402), (786, 812214), (801, 797004), (1014, 629586), (1053, 606268), (1068, 597753), (1157, 551772), (1179, 541476), (1404, 454701), (1521, 419724), (1572, 406107), (1602, 398502), (1703, 374868), (2028, 314793), (2106, 303134), (2314, 275886), (2358, 270738), (2403, 265668), (3042, 209862), (3204, 199251), (3406, 187434), (3471, 183924), (3537, 180492), (4212, 151567), (4563, 139908), (4628, 137943), (4716, 135369), (4806, 132834), (5109, 124956), (6084, 104931), (6812, 93717), (6942, 91962), (7074, 90246), (7209, 88556), (9126, 69954), (9612, 66417), (10218, 62478), (10413, 61308), (10611, 60164), (11659, 54756), (13689, 46636), (13884, 45981), (14148, 45123), (14418, 44278), (15041, 42444), (15327, 41652), (18252, 34977), (20436, 31239), (20826, 30654), (21222, 30082), (22139, 28836), (23318, 27378)]