20398470

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:134

約数の個数: 128

約数和(自身を含む): 56733696

約数和(自身を除く): 36335226

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 37, 46, 47, 51, 69, 74, 85, 94, 102, 111, 115, 138, 141, 170, 185, 222, 230, 235, 255, 282, 345, 370, 391, 470, 510, 555, 629, 690, 705, 782, 799, 851, 1081, 1110, 1173, 1258, 1410, 1598, 1702, 1739, 1887, 1955, 2162, 2346, 2397, 2553, 3145, 3243, 3478, 3774, 3910, 3995, 4255, 4794, 5106, 5217, 5405, 5865, 6290, 6486, 7990, 8510, 8695, 9435, 10434, 10810, 11730, 11985, 12765, 14467, 16215, 17390, 18377, 18870, 23970, 25530, 26085, 28934, 29563, 32430, 36754, 39997, 43401, 52170, 55131, 59126, 72335, 79994, 86802, 88689, 91885, 110262, 119991, 144670, 147815, 177378, 183770, 199985, 217005, 239982, 275655, 295630, 399970, 434010, 443445, 551310, 599955, 679949, 886890, 1199910, 1359898, 2039847, 3399745, 4079694, 6799490, 10199235, 20398470]

約数ペア:

[(1, 20398470), (2, 10199235), (3, 6799490), (5, 4079694), (6, 3399745), (10, 2039847), (15, 1359898), (17, 1199910), (23, 886890), (30, 679949), (34, 599955), (37, 551310), (46, 443445), (47, 434010), (51, 399970), (69, 295630), (74, 275655), (85, 239982), (94, 217005), (102, 199985), (111, 183770), (115, 177378), (138, 147815), (141, 144670), (170, 119991), (185, 110262), (222, 91885), (230, 88689), (235, 86802), (255, 79994), (282, 72335), (345, 59126), (370, 55131), (391, 52170), (470, 43401), (510, 39997), (555, 36754), (629, 32430), (690, 29563), (705, 28934), (782, 26085), (799, 25530), (851, 23970), (1081, 18870), (1110, 18377), (1173, 17390), (1258, 16215), (1410, 14467), (1598, 12765), (1702, 11985), (1739, 11730), (1887, 10810), (1955, 10434), (2162, 9435), (2346, 8695), (2397, 8510), (2553, 7990), (3145, 6486), (3243, 6290), (3478, 5865), (3774, 5405), (3910, 5217), (3995, 5106), (4255, 4794)]