19632920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 26815720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 223, 248, 284, 310, 355, 446, 568, 620, 710, 892, 1115, 1240, 1420, 1784, 2201, 2230, 2840, 4402, 4460, 6913, 8804, 8920, 11005, 13826, 15833, 17608, 22010, 27652, 31666, 34565, 44020, 55304, 63332, 69130, 79165, 88040, 126664, 138260, 158330, 276520, 316660, 490823, 633320, 981646, 1963292, 2454115, 3926584, 4908230, 9816460, 19632920]

約数ペア:

[(1, 19632920), (2, 9816460), (4, 4908230), (5, 3926584), (8, 2454115), (10, 1963292), (20, 981646), (31, 633320), (40, 490823), (62, 316660), (71, 276520), (124, 158330), (142, 138260), (155, 126664), (223, 88040), (248, 79165), (284, 69130), (310, 63332), (355, 55304), (446, 44020), (568, 34565), (620, 31666), (710, 27652), (892, 22010), (1115, 17608), (1240, 15833), (1420, 13826), (1784, 11005), (2201, 8920), (2230, 8804), (2840, 6913), (4402, 4460)]