21402450

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:456

約数の個数: 72

約数和(自身を含む): 58032000

約数和(自身を除く): 36629550

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 199, 225, 239, 398, 450, 478, 597, 717, 995, 1194, 1195, 1434, 1791, 1990, 2151, 2390, 2985, 3582, 3585, 4302, 4975, 5970, 5975, 7170, 8955, 9950, 10755, 11950, 14925, 17910, 17925, 21510, 29850, 35850, 44775, 47561, 53775, 89550, 95122, 107550, 142683, 237805, 285366, 428049, 475610, 713415, 856098, 1189025, 1426830, 2140245, 2378050, 3567075, 4280490, 7134150, 10701225, 21402450]

約数ペア:

[(1, 21402450), (2, 10701225), (3, 7134150), (5, 4280490), (6, 3567075), (9, 2378050), (10, 2140245), (15, 1426830), (18, 1189025), (25, 856098), (30, 713415), (45, 475610), (50, 428049), (75, 285366), (90, 237805), (150, 142683), (199, 107550), (225, 95122), (239, 89550), (398, 53775), (450, 47561), (478, 44775), (597, 35850), (717, 29850), (995, 21510), (1194, 17925), (1195, 17910), (1434, 14925), (1791, 11950), (1990, 10755), (2151, 9950), (2390, 8955), (2985, 7170), (3582, 5975), (3585, 5970), (4302, 4975)]