201711980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{557}}^1\times {\mathrm{953}}^1$

素因数の和:1538

約数の個数: 48

約数和(自身を含む): 447158880

約数和(自身を除く): 245446900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 557, 953, 1114, 1906, 2228, 2785, 3812, 4765, 5570, 9530, 10583, 11140, 18107, 19060, 21166, 36214, 42332, 52915, 72428, 90535, 105830, 181070, 211660, 362140, 530821, 1061642, 2123284, 2654105, 5308210, 10085599, 10616420, 20171198, 40342396, 50427995, 100855990, 201711980]

約数ペア:

[(1, 201711980), (2, 100855990), (4, 50427995), (5, 40342396), (10, 20171198), (19, 10616420), (20, 10085599), (38, 5308210), (76, 2654105), (95, 2123284), (190, 1061642), (380, 530821), (557, 362140), (953, 211660), (1114, 181070), (1906, 105830), (2228, 90535), (2785, 72428), (3812, 52915), (4765, 42332), (5570, 36214), (9530, 21166), (10583, 19060), (11140, 18107)]