2000410820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{409}}^1$

素因数の和:709

約数の個数: 96

約数和(自身を含む): 4526793600

約数和(自身を除く): 2526382780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 211, 244, 305, 380, 409, 422, 610, 818, 844, 1055, 1159, 1220, 1636, 2045, 2110, 2318, 4009, 4090, 4220, 4636, 5795, 7771, 8018, 8180, 11590, 12871, 15542, 16036, 20045, 23180, 24949, 25742, 31084, 38855, 40090, 49898, 51484, 64355, 77710, 80180, 86299, 99796, 124745, 128710, 155420, 172598, 244549, 249490, 257420, 345196, 431495, 474031, 489098, 498980, 862990, 948062, 978196, 1222745, 1639681, 1725980, 1896124, 2370155, 2445490, 3279362, 4740310, 4890980, 5264239, 6558724, 8198405, 9480620, 10528478, 16396810, 21056956, 26321195, 32793620, 52642390, 100020541, 105284780, 200041082, 400082164, 500102705, 1000205410, 2000410820]

約数ペア:

[(1, 2000410820), (2, 1000205410), (4, 500102705), (5, 400082164), (10, 200041082), (19, 105284780), (20, 100020541), (38, 52642390), (61, 32793620), (76, 26321195), (95, 21056956), (122, 16396810), (190, 10528478), (211, 9480620), (244, 8198405), (305, 6558724), (380, 5264239), (409, 4890980), (422, 4740310), (610, 3279362), (818, 2445490), (844, 2370155), (1055, 1896124), (1159, 1725980), (1220, 1639681), (1636, 1222745), (2045, 978196), (2110, 948062), (2318, 862990), (4009, 498980), (4090, 489098), (4220, 474031), (4636, 431495), (5795, 345196), (7771, 257420), (8018, 249490), (8180, 244549), (11590, 172598), (12871, 155420), (15542, 128710), (16036, 124745), (20045, 99796), (23180, 86299), (24949, 80180), (25742, 77710), (31084, 64355), (38855, 51484), (40090, 49898)]