156978620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{577}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 337145088

約数和(自身を除く): 180166468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 223, 244, 305, 446, 577, 610, 892, 1115, 1154, 1220, 2230, 2308, 2885, 4460, 5770, 11540, 13603, 27206, 35197, 54412, 68015, 70394, 128671, 136030, 140788, 175985, 257342, 272060, 351970, 514684, 643355, 703940, 1286710, 2573420, 7848931, 15697862, 31395724, 39244655, 78489310, 156978620]

約数ペア:

[(1, 156978620), (2, 78489310), (4, 39244655), (5, 31395724), (10, 15697862), (20, 7848931), (61, 2573420), (122, 1286710), (223, 703940), (244, 643355), (305, 514684), (446, 351970), (577, 272060), (610, 257342), (892, 175985), (1115, 140788), (1154, 136030), (1220, 128671), (2230, 70394), (2308, 68015), (2885, 54412), (4460, 35197), (5770, 27206), (11540, 13603)]