21119680

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2129}}^1$

素因数の和:2177

約数の個数: 56

約数和(自身を含む): 51937920

約数和(自身を除く): 30818240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2129, 2480, 4258, 4960, 8516, 9920, 10645, 17032, 21290, 34064, 42580, 65999, 68128, 85160, 131998, 136256, 170320, 263996, 329995, 340640, 527992, 659990, 681280, 1055984, 1319980, 2111968, 2639960, 4223936, 5279920, 10559840, 21119680]

約数ペア:

[(1, 21119680), (2, 10559840), (4, 5279920), (5, 4223936), (8, 2639960), (10, 2111968), (16, 1319980), (20, 1055984), (31, 681280), (32, 659990), (40, 527992), (62, 340640), (64, 329995), (80, 263996), (124, 170320), (155, 136256), (160, 131998), (248, 85160), (310, 68128), (320, 65999), (496, 42580), (620, 34064), (992, 21290), (1240, 17032), (1984, 10645), (2129, 9920), (2480, 8516), (4258, 4960)]