20683900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^3$

素因数の和:100

約数の個数: 72

約数和(自身を含む): 49684320

約数和(自身を除く): 29000420

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 25, 34, 46, 50, 68, 85, 92, 100, 115, 170, 230, 340, 391, 425, 460, 529, 575, 782, 850, 1058, 1150, 1564, 1700, 1955, 2116, 2300, 2645, 3910, 5290, 7820, 8993, 9775, 10580, 12167, 13225, 17986, 19550, 24334, 26450, 35972, 39100, 44965, 48668, 52900, 60835, 89930, 121670, 179860, 206839, 224825, 243340, 304175, 413678, 449650, 608350, 827356, 899300, 1034195, 1216700, 2068390, 4136780, 5170975, 10341950, 20683900]

約数ペア:

[(1, 20683900), (2, 10341950), (4, 5170975), (5, 4136780), (10, 2068390), (17, 1216700), (20, 1034195), (23, 899300), (25, 827356), (34, 608350), (46, 449650), (50, 413678), (68, 304175), (85, 243340), (92, 224825), (100, 206839), (115, 179860), (170, 121670), (230, 89930), (340, 60835), (391, 52900), (425, 48668), (460, 44965), (529, 39100), (575, 35972), (782, 26450), (850, 24334), (1058, 19550), (1150, 17986), (1564, 13225), (1700, 12167), (1955, 10580), (2116, 9775), (2300, 8993), (2645, 7820), (3910, 5290)]