21319974

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{509}}^1$

素因数の和:709

約数の個数: 48

約数和(自身を含む): 50122800

約数和(自身を除く): 28802826

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 179, 234, 358, 509, 537, 1018, 1074, 1527, 1611, 2327, 3054, 3222, 4581, 4654, 6617, 6981, 9162, 13234, 13962, 19851, 20943, 39702, 41886, 59553, 91111, 119106, 182222, 273333, 546666, 819999, 1184443, 1639998, 2368886, 3553329, 7106658, 10659987, 21319974]

約数ペア:

[(1, 21319974), (2, 10659987), (3, 7106658), (6, 3553329), (9, 2368886), (13, 1639998), (18, 1184443), (26, 819999), (39, 546666), (78, 273333), (117, 182222), (179, 119106), (234, 91111), (358, 59553), (509, 41886), (537, 39702), (1018, 20943), (1074, 19851), (1527, 13962), (1611, 13234), (2327, 9162), (3054, 6981), (3222, 6617), (4581, 4654)]