19673720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{733}}^1$

素因数の和:816

約数の個数: 64

約数和(自身を含む): 49148640

約数和(自身を除く): 29474920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 733, 1220, 1342, 1466, 2440, 2684, 2932, 3355, 3665, 5368, 5864, 6710, 7330, 8063, 13420, 14660, 16126, 26840, 29320, 32252, 40315, 44713, 64504, 80630, 89426, 161260, 178852, 223565, 322520, 357704, 447130, 491843, 894260, 983686, 1788520, 1967372, 2459215, 3934744, 4918430, 9836860, 19673720]

約数ペア:

[(1, 19673720), (2, 9836860), (4, 4918430), (5, 3934744), (8, 2459215), (10, 1967372), (11, 1788520), (20, 983686), (22, 894260), (40, 491843), (44, 447130), (55, 357704), (61, 322520), (88, 223565), (110, 178852), (122, 161260), (220, 89426), (244, 80630), (305, 64504), (440, 44713), (488, 40315), (610, 32252), (671, 29320), (733, 26840), (1220, 16126), (1342, 14660), (1466, 13420), (2440, 8063), (2684, 7330), (2932, 6710), (3355, 5864), (3665, 5368)]