19650480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1997}}^1$

素因数の和:2054

約数の個数: 80

約数和(自身を含む): 62433504

約数和(自身を除く): 42783024

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 1997, 2460, 3280, 3994, 4920, 5991, 7988, 9840, 9985, 11982, 15976, 19970, 23964, 29955, 31952, 39940, 47928, 59910, 79880, 81877, 95856, 119820, 159760, 163754, 239640, 245631, 327508, 409385, 479280, 491262, 655016, 818770, 982524, 1228155, 1310032, 1637540, 1965048, 2456310, 3275080, 3930096, 4912620, 6550160, 9825240, 19650480]

約数ペア:

[(1, 19650480), (2, 9825240), (3, 6550160), (4, 4912620), (5, 3930096), (6, 3275080), (8, 2456310), (10, 1965048), (12, 1637540), (15, 1310032), (16, 1228155), (20, 982524), (24, 818770), (30, 655016), (40, 491262), (41, 479280), (48, 409385), (60, 327508), (80, 245631), (82, 239640), (120, 163754), (123, 159760), (164, 119820), (205, 95856), (240, 81877), (246, 79880), (328, 59910), (410, 47928), (492, 39940), (615, 31952), (656, 29955), (820, 23964), (984, 19970), (1230, 15976), (1640, 11982), (1968, 9985), (1997, 9840), (2460, 7988), (3280, 5991), (3994, 4920)]