20913240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2857}}^1$

素因数の和:2932

約数の個数: 64

約数和(自身を含む): 63790560

約数和(自身を除く): 42877320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2857, 3660, 5714, 7320, 8571, 11428, 14285, 17142, 22856, 28570, 34284, 42855, 57140, 68568, 85710, 114280, 171420, 174277, 342840, 348554, 522831, 697108, 871385, 1045662, 1394216, 1742770, 2091324, 2614155, 3485540, 4182648, 5228310, 6971080, 10456620, 20913240]

約数ペア:

[(1, 20913240), (2, 10456620), (3, 6971080), (4, 5228310), (5, 4182648), (6, 3485540), (8, 2614155), (10, 2091324), (12, 1742770), (15, 1394216), (20, 1045662), (24, 871385), (30, 697108), (40, 522831), (60, 348554), (61, 342840), (120, 174277), (122, 171420), (183, 114280), (244, 85710), (305, 68568), (366, 57140), (488, 42855), (610, 34284), (732, 28570), (915, 22856), (1220, 17142), (1464, 14285), (1830, 11428), (2440, 8571), (2857, 7320), (3660, 5714)]