19984125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 39776256

約数和(自身を除く): 19792131

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 69, 75, 105, 115, 125, 161, 175, 331, 345, 375, 483, 525, 575, 805, 875, 993, 1655, 1725, 2317, 2415, 2625, 2875, 4025, 4965, 6951, 7613, 8275, 8625, 11585, 12075, 20125, 22839, 24825, 34755, 38065, 41375, 53291, 57925, 60375, 114195, 124125, 159873, 173775, 190325, 266455, 289625, 570975, 799365, 868875, 951625, 1332275, 2854875, 3996825, 6661375, 19984125]

約数ペア:

[(1, 19984125), (3, 6661375), (5, 3996825), (7, 2854875), (15, 1332275), (21, 951625), (23, 868875), (25, 799365), (35, 570975), (69, 289625), (75, 266455), (105, 190325), (115, 173775), (125, 159873), (161, 124125), (175, 114195), (331, 60375), (345, 57925), (375, 53291), (483, 41375), (525, 38065), (575, 34755), (805, 24825), (875, 22839), (993, 20125), (1655, 12075), (1725, 11585), (2317, 8625), (2415, 8275), (2625, 7613), (2875, 6951), (4025, 4965)]