18983696

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1079

約数の個数: 40

約数和(自身を含む): 39533184

約数和(自身を除く): 20549488

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 71, 136, 142, 272, 284, 568, 983, 1136, 1207, 1966, 2414, 3932, 4828, 7864, 9656, 15728, 16711, 19312, 33422, 66844, 69793, 133688, 139586, 267376, 279172, 558344, 1116688, 1186481, 2372962, 4745924, 9491848, 18983696]

約数ペア:

[(1, 18983696), (2, 9491848), (4, 4745924), (8, 2372962), (16, 1186481), (17, 1116688), (34, 558344), (68, 279172), (71, 267376), (136, 139586), (142, 133688), (272, 69793), (284, 66844), (568, 33422), (983, 19312), (1136, 16711), (1207, 15728), (1966, 9656), (2414, 7864), (3932, 4828)]