20537460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1607}}^1$

素因数の和:1693

約数の個数: 72

約数和(自身を含む): 63213696

約数和(自身を除く): 42676236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1607, 2130, 2556, 3195, 3214, 4260, 4821, 6390, 6428, 8035, 9642, 12780, 14463, 16070, 19284, 24105, 28926, 32140, 48210, 57852, 72315, 96420, 114097, 144630, 228194, 289260, 342291, 456388, 570485, 684582, 1026873, 1140970, 1369164, 1711455, 2053746, 2281940, 3422910, 4107492, 5134365, 6845820, 10268730, 20537460]

約数ペア:

[(1, 20537460), (2, 10268730), (3, 6845820), (4, 5134365), (5, 4107492), (6, 3422910), (9, 2281940), (10, 2053746), (12, 1711455), (15, 1369164), (18, 1140970), (20, 1026873), (30, 684582), (36, 570485), (45, 456388), (60, 342291), (71, 289260), (90, 228194), (142, 144630), (180, 114097), (213, 96420), (284, 72315), (355, 57852), (426, 48210), (639, 32140), (710, 28926), (852, 24105), (1065, 19284), (1278, 16070), (1420, 14463), (1607, 12780), (2130, 9642), (2556, 8035), (3195, 6428), (3214, 6390), (4260, 4821)]