20995416

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{7477}}^1$

素因数の和:7505

約数の個数: 64

約数和(自身を含む): 62815200

約数和(自身を除く): 41819784

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404, 2808, 7477, 14954, 22431, 29908, 44862, 59816, 67293, 89724, 97201, 134586, 179448, 194402, 201879, 269172, 291603, 388804, 403758, 538344, 583206, 777608, 807516, 874809, 1166412, 1615032, 1749618, 2332824, 2624427, 3499236, 5248854, 6998472, 10497708, 20995416]

約数ペア:

[(1, 20995416), (2, 10497708), (3, 6998472), (4, 5248854), (6, 3499236), (8, 2624427), (9, 2332824), (12, 1749618), (13, 1615032), (18, 1166412), (24, 874809), (26, 807516), (27, 777608), (36, 583206), (39, 538344), (52, 403758), (54, 388804), (72, 291603), (78, 269172), (104, 201879), (108, 194402), (117, 179448), (156, 134586), (216, 97201), (234, 89724), (312, 67293), (351, 59816), (468, 44862), (702, 29908), (936, 22431), (1404, 14954), (2808, 7477)]