28561000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^4$

素因数の和:73

約数の個数: 80

約数和(自身を含む): 72401940

約数和(自身を除く): 43840940

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 169, 200, 250, 260, 325, 338, 500, 520, 650, 676, 845, 1000, 1300, 1352, 1625, 1690, 2197, 2600, 3250, 3380, 4225, 4394, 6500, 6760, 8450, 8788, 10985, 13000, 16900, 17576, 21125, 21970, 28561, 33800, 42250, 43940, 54925, 57122, 84500, 87880, 109850, 114244, 142805, 169000, 219700, 228488, 274625, 285610, 439400, 549250, 571220, 714025, 1098500, 1142440, 1428050, 2197000, 2856100, 3570125, 5712200, 7140250, 14280500, 28561000]

約数ペア:

[(1, 28561000), (2, 14280500), (4, 7140250), (5, 5712200), (8, 3570125), (10, 2856100), (13, 2197000), (20, 1428050), (25, 1142440), (26, 1098500), (40, 714025), (50, 571220), (52, 549250), (65, 439400), (100, 285610), (104, 274625), (125, 228488), (130, 219700), (169, 169000), (200, 142805), (250, 114244), (260, 109850), (325, 87880), (338, 84500), (500, 57122), (520, 54925), (650, 43940), (676, 42250), (845, 33800), (1000, 28561), (1300, 21970), (1352, 21125), (1625, 17576), (1690, 16900), (2197, 13000), (2600, 10985), (3250, 8788), (3380, 8450), (4225, 6760), (4394, 6500)]