19967350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:194

約数の個数: 72

約数和(自身を含む): 42887880

約数和(自身を除く): 22920530

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 139, 169, 170, 221, 278, 325, 338, 425, 442, 650, 695, 845, 850, 1105, 1390, 1690, 1807, 2210, 2363, 2873, 3475, 3614, 4225, 4726, 5525, 5746, 6950, 8450, 9035, 11050, 11815, 14365, 18070, 23491, 23630, 28730, 30719, 45175, 46982, 59075, 61438, 71825, 90350, 117455, 118150, 143650, 153595, 234910, 307190, 399347, 587275, 767975, 798694, 1174550, 1535950, 1996735, 3993470, 9983675, 19967350]

約数ペア:

[(1, 19967350), (2, 9983675), (5, 3993470), (10, 1996735), (13, 1535950), (17, 1174550), (25, 798694), (26, 767975), (34, 587275), (50, 399347), (65, 307190), (85, 234910), (130, 153595), (139, 143650), (169, 118150), (170, 117455), (221, 90350), (278, 71825), (325, 61438), (338, 59075), (425, 46982), (442, 45175), (650, 30719), (695, 28730), (845, 23630), (850, 23491), (1105, 18070), (1390, 14365), (1690, 11815), (1807, 11050), (2210, 9035), (2363, 8450), (2873, 6950), (3475, 5746), (3614, 5525), (4225, 4726)]