66870640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 161078976

約数和(自身を除く): 94208336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 71, 80, 122, 142, 193, 244, 284, 305, 355, 386, 488, 568, 610, 710, 772, 965, 976, 1136, 1220, 1420, 1544, 1930, 2440, 2840, 3088, 3860, 4331, 4880, 5680, 7720, 8662, 11773, 13703, 15440, 17324, 21655, 23546, 27406, 34648, 43310, 47092, 54812, 58865, 68515, 69296, 86620, 94184, 109624, 117730, 137030, 173240, 188368, 219248, 235460, 274060, 346480, 470920, 548120, 835883, 941840, 1096240, 1671766, 3343532, 4179415, 6687064, 8358830, 13374128, 16717660, 33435320, 66870640]

約数ペア:

[(1, 66870640), (2, 33435320), (4, 16717660), (5, 13374128), (8, 8358830), (10, 6687064), (16, 4179415), (20, 3343532), (40, 1671766), (61, 1096240), (71, 941840), (80, 835883), (122, 548120), (142, 470920), (193, 346480), (244, 274060), (284, 235460), (305, 219248), (355, 188368), (386, 173240), (488, 137030), (568, 117730), (610, 109624), (710, 94184), (772, 86620), (965, 69296), (976, 68515), (1136, 58865), (1220, 54812), (1420, 47092), (1544, 43310), (1930, 34648), (2440, 27406), (2840, 23546), (3088, 21655), (3860, 17324), (4331, 15440), (4880, 13703), (5680, 11773), (7720, 8662)]