21374940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{8689}}^1$

素因数の和:8742

約数の個数: 48

約数和(自身を含む): 61316640

約数和(自身を除く): 39941700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 820, 1230, 2460, 8689, 17378, 26067, 34756, 43445, 52134, 86890, 104268, 130335, 173780, 260670, 356249, 521340, 712498, 1068747, 1424996, 1781245, 2137494, 3562490, 4274988, 5343735, 7124980, 10687470, 21374940]

約数ペア:

[(1, 21374940), (2, 10687470), (3, 7124980), (4, 5343735), (5, 4274988), (6, 3562490), (10, 2137494), (12, 1781245), (15, 1424996), (20, 1068747), (30, 712498), (41, 521340), (60, 356249), (82, 260670), (123, 173780), (164, 130335), (205, 104268), (246, 86890), (410, 52134), (492, 43445), (615, 34756), (820, 26067), (1230, 17378), (2460, 8689)]