28458640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:680

約数の個数: 80

約数和(自身を含む): 76602240

約数和(自身を除く): 48143600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 571, 623, 712, 890, 1142, 1246, 1424, 1780, 2284, 2492, 2855, 3115, 3560, 3997, 4568, 4984, 5710, 6230, 7120, 7994, 9136, 9968, 11420, 12460, 15988, 19985, 22840, 24920, 31976, 39970, 45680, 49840, 50819, 63952, 79940, 101638, 159880, 203276, 254095, 319760, 355733, 406552, 508190, 711466, 813104, 1016380, 1422932, 1778665, 2032760, 2845864, 3557330, 4065520, 5691728, 7114660, 14229320, 28458640]

約数ペア:

[(1, 28458640), (2, 14229320), (4, 7114660), (5, 5691728), (7, 4065520), (8, 3557330), (10, 2845864), (14, 2032760), (16, 1778665), (20, 1422932), (28, 1016380), (35, 813104), (40, 711466), (56, 508190), (70, 406552), (80, 355733), (89, 319760), (112, 254095), (140, 203276), (178, 159880), (280, 101638), (356, 79940), (445, 63952), (560, 50819), (571, 49840), (623, 45680), (712, 39970), (890, 31976), (1142, 24920), (1246, 22840), (1424, 19985), (1780, 15988), (2284, 12460), (2492, 11420), (2855, 9968), (3115, 9136), (3560, 7994), (3997, 7120), (4568, 6230), (4984, 5710)]