157420280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{1231}}^1$

素因数の和:1404

約数の個数: 64

約数和(自身を含む): 372556800

約数和(自身を除く): 215136520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 139, 184, 230, 278, 460, 556, 695, 920, 1112, 1231, 1390, 2462, 2780, 3197, 4924, 5560, 6155, 6394, 9848, 12310, 12788, 15985, 24620, 25576, 28313, 31970, 49240, 56626, 63940, 113252, 127880, 141565, 171109, 226504, 283130, 342218, 566260, 684436, 855545, 1132520, 1368872, 1711090, 3422180, 3935507, 6844360, 7871014, 15742028, 19677535, 31484056, 39355070, 78710140, 157420280]

約数ペア:

[(1, 157420280), (2, 78710140), (4, 39355070), (5, 31484056), (8, 19677535), (10, 15742028), (20, 7871014), (23, 6844360), (40, 3935507), (46, 3422180), (92, 1711090), (115, 1368872), (139, 1132520), (184, 855545), (230, 684436), (278, 566260), (460, 342218), (556, 283130), (695, 226504), (920, 171109), (1112, 141565), (1231, 127880), (1390, 113252), (2462, 63940), (2780, 56626), (3197, 49240), (4924, 31970), (5560, 28313), (6155, 25576), (6394, 24620), (9848, 15985), (12310, 12788)]