201911930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:443

約数の個数: 64

約数和(自身を含む): 407586816

約数和(自身を除く): 205674886

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 103, 110, 142, 206, 251, 355, 502, 515, 710, 781, 1030, 1133, 1255, 1562, 2266, 2510, 2761, 3905, 5522, 5665, 7313, 7810, 11330, 13805, 14626, 17821, 25853, 27610, 35642, 36565, 51706, 73130, 80443, 89105, 129265, 160886, 178210, 196031, 258530, 284383, 392062, 402215, 568766, 804430, 980155, 1421915, 1835563, 1960310, 2843830, 3671126, 9177815, 18355630, 20191193, 40382386, 100955965, 201911930]

約数ペア:

[(1, 201911930), (2, 100955965), (5, 40382386), (10, 20191193), (11, 18355630), (22, 9177815), (55, 3671126), (71, 2843830), (103, 1960310), (110, 1835563), (142, 1421915), (206, 980155), (251, 804430), (355, 568766), (502, 402215), (515, 392062), (710, 284383), (781, 258530), (1030, 196031), (1133, 178210), (1255, 160886), (1562, 129265), (2266, 89105), (2510, 80443), (2761, 73130), (3905, 51706), (5522, 36565), (5665, 35642), (7313, 27610), (7810, 25853), (11330, 17821), (13805, 14626)]