19641820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:203

約数の個数: 96

約数和(自身を含む): 49029120

約数和(自身を除く): 29387300

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 37, 38, 44, 55, 74, 76, 95, 110, 127, 148, 185, 190, 209, 220, 254, 370, 380, 407, 418, 508, 635, 703, 740, 814, 836, 1045, 1270, 1397, 1406, 1628, 2035, 2090, 2413, 2540, 2794, 2812, 3515, 4070, 4180, 4699, 4826, 5588, 6985, 7030, 7733, 8140, 9398, 9652, 12065, 13970, 14060, 15466, 18796, 23495, 24130, 26543, 27940, 30932, 38665, 46990, 48260, 51689, 53086, 77330, 89281, 93980, 103378, 106172, 132715, 154660, 178562, 206756, 258445, 265430, 357124, 446405, 516890, 530860, 892810, 982091, 1033780, 1785620, 1964182, 3928364, 4910455, 9820910, 19641820]

約数ペア:

[(1, 19641820), (2, 9820910), (4, 4910455), (5, 3928364), (10, 1964182), (11, 1785620), (19, 1033780), (20, 982091), (22, 892810), (37, 530860), (38, 516890), (44, 446405), (55, 357124), (74, 265430), (76, 258445), (95, 206756), (110, 178562), (127, 154660), (148, 132715), (185, 106172), (190, 103378), (209, 93980), (220, 89281), (254, 77330), (370, 53086), (380, 51689), (407, 48260), (418, 46990), (508, 38665), (635, 30932), (703, 27940), (740, 26543), (814, 24130), (836, 23495), (1045, 18796), (1270, 15466), (1397, 14060), (1406, 13970), (1628, 12065), (2035, 9652), (2090, 9398), (2413, 8140), (2540, 7733), (2794, 7030), (2812, 6985), (3515, 5588), (4070, 4826), (4180, 4699)]