20199231340

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1\times {\mathrm{71059}}^1$

素因数の和:71362

約数の個数: 48

約数和(自身を含む): 43299416160

約数和(自身を除く): 23100184820

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 233, 244, 305, 466, 610, 932, 1165, 1220, 2330, 4660, 14213, 28426, 56852, 71059, 71065, 142118, 142130, 284236, 284260, 355295, 710590, 1421180, 4334599, 8669198, 16556747, 17338396, 21672995, 33113494, 43345990, 66226988, 82783735, 86691980, 165567470, 331134940, 1009961567, 2019923134, 4039846268, 5049807835, 10099615670, 20199231340]

約数ペア:

[(1, 20199231340), (2, 10099615670), (4, 5049807835), (5, 4039846268), (10, 2019923134), (20, 1009961567), (61, 331134940), (122, 165567470), (233, 86691980), (244, 82783735), (305, 66226988), (466, 43345990), (610, 33113494), (932, 21672995), (1165, 17338396), (1220, 16556747), (2330, 8669198), (4660, 4334599), (14213, 1421180), (28426, 710590), (56852, 355295), (71059, 284260), (71065, 284236), (142118, 142130)]