20411510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 44928000

約数和(自身を除く): 24516490

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 103, 133, 149, 190, 206, 266, 298, 515, 665, 721, 745, 1030, 1043, 1330, 1442, 1490, 1957, 2086, 2831, 3605, 3914, 5215, 5662, 7210, 9785, 10430, 13699, 14155, 15347, 19570, 19817, 27398, 28310, 30694, 39634, 68495, 76735, 99085, 107429, 136990, 153470, 198170, 214858, 291593, 537145, 583186, 1074290, 1457965, 2041151, 2915930, 4082302, 10205755, 20411510]

約数ペア:

[(1, 20411510), (2, 10205755), (5, 4082302), (7, 2915930), (10, 2041151), (14, 1457965), (19, 1074290), (35, 583186), (38, 537145), (70, 291593), (95, 214858), (103, 198170), (133, 153470), (149, 136990), (190, 107429), (206, 99085), (266, 76735), (298, 68495), (515, 39634), (665, 30694), (721, 28310), (745, 27398), (1030, 19817), (1043, 19570), (1330, 15347), (1442, 14155), (1490, 13699), (1957, 10430), (2086, 9785), (2831, 7210), (3605, 5662), (3914, 5215)]