21469360

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:842

約数の個数: 80

約数和(自身を含む): 56282112

約数和(自身を除く): 34812752

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 787, 880, 1240, 1364, 1574, 1705, 2480, 2728, 3148, 3410, 3935, 5456, 6296, 6820, 7870, 8657, 12592, 13640, 15740, 17314, 24397, 27280, 31480, 34628, 43285, 48794, 62960, 69256, 86570, 97588, 121985, 138512, 173140, 195176, 243970, 268367, 346280, 390352, 487940, 536734, 692560, 975880, 1073468, 1341835, 1951760, 2146936, 2683670, 4293872, 5367340, 10734680, 21469360]

約数ペア:

[(1, 21469360), (2, 10734680), (4, 5367340), (5, 4293872), (8, 2683670), (10, 2146936), (11, 1951760), (16, 1341835), (20, 1073468), (22, 975880), (31, 692560), (40, 536734), (44, 487940), (55, 390352), (62, 346280), (80, 268367), (88, 243970), (110, 195176), (124, 173140), (155, 138512), (176, 121985), (220, 97588), (248, 86570), (310, 69256), (341, 62960), (440, 48794), (496, 43285), (620, 34628), (682, 31480), (787, 27280), (880, 24397), (1240, 17314), (1364, 15740), (1574, 13640), (1705, 12592), (2480, 8657), (2728, 7870), (3148, 6820), (3410, 6296), (3935, 5456)]