19977516

素因数分解:

$2^2\times 3^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 168

約数和(自身を含む): 61697664

約数和(自身を除く): 41720148

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 27, 31, 34, 36, 39, 51, 52, 54, 62, 68, 78, 81, 93, 102, 108, 117, 124, 153, 156, 162, 186, 204, 221, 234, 243, 279, 306, 324, 351, 372, 403, 442, 459, 468, 486, 527, 558, 612, 663, 702, 729, 806, 837, 884, 918, 972, 1053, 1054, 1116, 1209, 1326, 1377, 1404, 1458, 1581, 1612, 1674, 1836, 1989, 2106, 2108, 2418, 2511, 2652, 2754, 2916, 3159, 3162, 3348, 3627, 3978, 4131, 4212, 4743, 4836, 5022, 5508, 5967, 6318, 6324, 6851, 7254, 7533, 7956, 8262, 9477, 9486, 10044, 10881, 11934, 12393, 12636, 13702, 14229, 14508, 15066, 16524, 17901, 18954, 18972, 20553, 21762, 22599, 23868, 24786, 27404, 28458, 30132, 32643, 35802, 37908, 41106, 42687, 43524, 45198, 49572, 53703, 56916, 61659, 65286, 71604, 82212, 85374, 90396, 97929, 107406, 123318, 128061, 130572, 161109, 170748, 184977, 195858, 214812, 246636, 256122, 293787, 322218, 369954, 384183, 391716, 512244, 554931, 587574, 644436, 739908, 768366, 1109862, 1175148, 1536732, 1664793, 2219724, 3329586, 4994379, 6659172, 9988758, 19977516]

約数ペア:

[(1, 19977516), (2, 9988758), (3, 6659172), (4, 4994379), (6, 3329586), (9, 2219724), (12, 1664793), (13, 1536732), (17, 1175148), (18, 1109862), (26, 768366), (27, 739908), (31, 644436), (34, 587574), (36, 554931), (39, 512244), (51, 391716), (52, 384183), (54, 369954), (62, 322218), (68, 293787), (78, 256122), (81, 246636), (93, 214812), (102, 195858), (108, 184977), (117, 170748), (124, 161109), (153, 130572), (156, 128061), (162, 123318), (186, 107406), (204, 97929), (221, 90396), (234, 85374), (243, 82212), (279, 71604), (306, 65286), (324, 61659), (351, 56916), (372, 53703), (403, 49572), (442, 45198), (459, 43524), (468, 42687), (486, 41106), (527, 37908), (558, 35802), (612, 32643), (663, 30132), (702, 28458), (729, 27404), (806, 24786), (837, 23868), (884, 22599), (918, 21762), (972, 20553), (1053, 18972), (1054, 18954), (1116, 17901), (1209, 16524), (1326, 15066), (1377, 14508), (1404, 14229), (1458, 13702), (1581, 12636), (1612, 12393), (1674, 11934), (1836, 10881), (1989, 10044), (2106, 9486), (2108, 9477), (2418, 8262), (2511, 7956), (2652, 7533), (2754, 7254), (2916, 6851), (3159, 6324), (3162, 6318), (3348, 5967), (3627, 5508), (3978, 5022), (4131, 4836), (4212, 4743)]