21890310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{41}}^1$

素因数の和:138

約数の個数: 96

約数和(自身を含む): 59566752

約数和(自身を除く): 37676442

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 37, 39, 41, 65, 74, 78, 82, 111, 123, 130, 185, 195, 205, 222, 246, 370, 390, 410, 481, 533, 555, 615, 962, 1066, 1110, 1230, 1369, 1443, 1517, 1599, 2405, 2665, 2738, 2886, 3034, 3198, 4107, 4551, 4810, 5330, 6845, 7215, 7585, 7995, 8214, 9102, 13690, 14430, 15170, 15990, 17797, 19721, 20535, 22755, 35594, 39442, 41070, 45510, 53391, 56129, 59163, 88985, 98605, 106782, 112258, 118326, 168387, 177970, 197210, 266955, 280645, 295815, 336774, 533910, 561290, 591630, 729677, 841935, 1459354, 1683870, 2189031, 3648385, 4378062, 7296770, 10945155, 21890310]

約数ペア:

[(1, 21890310), (2, 10945155), (3, 7296770), (5, 4378062), (6, 3648385), (10, 2189031), (13, 1683870), (15, 1459354), (26, 841935), (30, 729677), (37, 591630), (39, 561290), (41, 533910), (65, 336774), (74, 295815), (78, 280645), (82, 266955), (111, 197210), (123, 177970), (130, 168387), (185, 118326), (195, 112258), (205, 106782), (222, 98605), (246, 88985), (370, 59163), (390, 56129), (410, 53391), (481, 45510), (533, 41070), (555, 39442), (615, 35594), (962, 22755), (1066, 20535), (1110, 19721), (1230, 17797), (1369, 15990), (1443, 15170), (1517, 14430), (1599, 13690), (2405, 9102), (2665, 8214), (2738, 7995), (2886, 7585), (3034, 7215), (3198, 6845), (4107, 5330), (4551, 4810)]