18830330

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19876870

約数列:

[1, 2, 5, 10, 19, 23, 31, 38, 46, 62, 95, 115, 139, 155, 190, 230, 278, 310, 437, 589, 695, 713, 874, 1178, 1390, 1426, 2185, 2641, 2945, 3197, 3565, 4309, 4370, 5282, 5890, 6394, 7130, 8618, 13205, 13547, 15985, 21545, 26410, 27094, 31970, 43090, 60743, 67735, 81871, 99107, 121486, 135470, 163742, 198214, 303715, 409355, 495535, 607430, 818710, 991070, 1883033, 3766066, 9415165, 18830330]

約数ペア:

[(1, 18830330), (2, 9415165), (5, 3766066), (10, 1883033), (19, 991070), (23, 818710), (31, 607430), (38, 495535), (46, 409355), (62, 303715), (95, 198214), (115, 163742), (139, 135470), (155, 121486), (190, 99107), (230, 81871), (278, 67735), (310, 60743), (437, 43090), (589, 31970), (695, 27094), (713, 26410), (874, 21545), (1178, 15985), (1390, 13547), (1426, 13205), (2185, 8618), (2641, 7130), (2945, 6394), (3197, 5890), (3565, 5282), (4309, 4370)]