21264040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{571}}^1$

素因数の和:615

約数の個数: 96

約数和(自身を含む): 58687200

約数和(自身を除く): 37423160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 245, 266, 280, 380, 392, 490, 532, 571, 665, 760, 931, 980, 1064, 1142, 1330, 1862, 1960, 2284, 2660, 2855, 3724, 3997, 4568, 4655, 5320, 5710, 7448, 7994, 9310, 10849, 11420, 15988, 18620, 19985, 21698, 22840, 27979, 31976, 37240, 39970, 43396, 54245, 55958, 75943, 79940, 86792, 108490, 111916, 139895, 151886, 159880, 216980, 223832, 279790, 303772, 379715, 433960, 531601, 559580, 607544, 759430, 1063202, 1119160, 1518860, 2126404, 2658005, 3037720, 4252808, 5316010, 10632020, 21264040]

約数ペア:

[(1, 21264040), (2, 10632020), (4, 5316010), (5, 4252808), (7, 3037720), (8, 2658005), (10, 2126404), (14, 1518860), (19, 1119160), (20, 1063202), (28, 759430), (35, 607544), (38, 559580), (40, 531601), (49, 433960), (56, 379715), (70, 303772), (76, 279790), (95, 223832), (98, 216980), (133, 159880), (140, 151886), (152, 139895), (190, 111916), (196, 108490), (245, 86792), (266, 79940), (280, 75943), (380, 55958), (392, 54245), (490, 43396), (532, 39970), (571, 37240), (665, 31976), (760, 27979), (931, 22840), (980, 21698), (1064, 19985), (1142, 18620), (1330, 15988), (1862, 11420), (1960, 10849), (2284, 9310), (2660, 7994), (2855, 7448), (3724, 5710), (3997, 5320), (4568, 4655)]