19917128

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 49248000

約数和(自身を除く): 29330872

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 31, 44, 49, 56, 62, 77, 88, 98, 124, 149, 154, 196, 217, 248, 298, 308, 341, 392, 434, 539, 596, 616, 682, 868, 1043, 1078, 1192, 1364, 1519, 1639, 1736, 2086, 2156, 2387, 2728, 3038, 3278, 4172, 4312, 4619, 4774, 6076, 6556, 7301, 8344, 9238, 9548, 11473, 12152, 13112, 14602, 16709, 18476, 19096, 22946, 29204, 32333, 33418, 36952, 45892, 50809, 58408, 64666, 66836, 80311, 91784, 101618, 129332, 133672, 160622, 203236, 226331, 258664, 321244, 355663, 406472, 452662, 642488, 711326, 905324, 1422652, 1810648, 2489641, 2845304, 4979282, 9958564, 19917128]

約数ペア:

[(1, 19917128), (2, 9958564), (4, 4979282), (7, 2845304), (8, 2489641), (11, 1810648), (14, 1422652), (22, 905324), (28, 711326), (31, 642488), (44, 452662), (49, 406472), (56, 355663), (62, 321244), (77, 258664), (88, 226331), (98, 203236), (124, 160622), (149, 133672), (154, 129332), (196, 101618), (217, 91784), (248, 80311), (298, 66836), (308, 64666), (341, 58408), (392, 50809), (434, 45892), (539, 36952), (596, 33418), (616, 32333), (682, 29204), (868, 22946), (1043, 19096), (1078, 18476), (1192, 16709), (1364, 14602), (1519, 13112), (1639, 12152), (1736, 11473), (2086, 9548), (2156, 9238), (2387, 8344), (2728, 7301), (3038, 6556), (3278, 6076), (4172, 4774), (4312, 4619)]