20802471940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{787}}^1\times {\mathrm{77743}}^1$

素因数の和:78556

約数の個数: 48

約数和(自身を含む): 46314277632

約数和(自身を除く): 25511805692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 787, 1574, 3148, 3935, 7870, 13379, 15740, 26758, 53516, 66895, 77743, 133790, 155486, 267580, 310972, 388715, 777430, 1321631, 1554860, 2643262, 5286524, 6608155, 13216310, 26432620, 61183741, 122367482, 244734964, 305918705, 611837410, 1040123597, 1223674820, 2080247194, 4160494388, 5200617985, 10401235970, 20802471940]

約数ペア:

[(1, 20802471940), (2, 10401235970), (4, 5200617985), (5, 4160494388), (10, 2080247194), (17, 1223674820), (20, 1040123597), (34, 611837410), (68, 305918705), (85, 244734964), (170, 122367482), (340, 61183741), (787, 26432620), (1574, 13216310), (3148, 6608155), (3935, 5286524), (7870, 2643262), (13379, 1554860), (15740, 1321631), (26758, 777430), (53516, 388715), (66895, 310972), (77743, 267580), (133790, 155486)]