1814275780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:857

約数の個数: 72

約数和(自身を含む): 3961306944

約数和(自身を除く): 2147031164

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 355, 430, 691, 710, 860, 1382, 1420, 1849, 2764, 3053, 3455, 3698, 6106, 6910, 7396, 9245, 12212, 13820, 15265, 18490, 29713, 30530, 36980, 49061, 59426, 61060, 98122, 118852, 131279, 148565, 196244, 245305, 262558, 297130, 490610, 525116, 594260, 656395, 981220, 1277659, 1312790, 2109623, 2555318, 2625580, 4219246, 5110636, 6388295, 8438492, 10548115, 12776590, 21096230, 25553180, 42192460, 90713789, 181427578, 362855156, 453568945, 907137890, 1814275780]

約数ペア:

[(1, 1814275780), (2, 907137890), (4, 453568945), (5, 362855156), (10, 181427578), (20, 90713789), (43, 42192460), (71, 25553180), (86, 21096230), (142, 12776590), (172, 10548115), (215, 8438492), (284, 6388295), (355, 5110636), (430, 4219246), (691, 2625580), (710, 2555318), (860, 2109623), (1382, 1312790), (1420, 1277659), (1849, 981220), (2764, 656395), (3053, 594260), (3455, 525116), (3698, 490610), (6106, 297130), (6910, 262558), (7396, 245305), (9245, 196244), (12212, 148565), (13820, 131279), (15265, 118852), (18490, 98122), (29713, 61060), (30530, 59426), (36980, 49061)]