21691940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{593}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26208220

約数列:

[1, 2, 4, 5, 10, 20, 31, 59, 62, 118, 124, 155, 236, 295, 310, 590, 593, 620, 1180, 1186, 1829, 2372, 2965, 3658, 5930, 7316, 9145, 11860, 18290, 18383, 34987, 36580, 36766, 69974, 73532, 91915, 139948, 174935, 183830, 349870, 367660, 699740, 1084597, 2169194, 4338388, 5422985, 10845970, 21691940]

約数ペア:

[(1, 21691940), (2, 10845970), (4, 5422985), (5, 4338388), (10, 2169194), (20, 1084597), (31, 699740), (59, 367660), (62, 349870), (118, 183830), (124, 174935), (155, 139948), (236, 91915), (295, 73532), (310, 69974), (590, 36766), (593, 36580), (620, 34987), (1180, 18383), (1186, 18290), (1829, 11860), (2372, 9145), (2965, 7316), (3658, 5930)]