20935720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 54021600

約数和(自身を除く): 33085880

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 163, 169, 190, 247, 260, 326, 338, 380, 494, 520, 652, 676, 760, 815, 845, 988, 1235, 1304, 1352, 1630, 1690, 1976, 2119, 2470, 3097, 3211, 3260, 3380, 4238, 4940, 6194, 6422, 6520, 6760, 8476, 9880, 10595, 12388, 12844, 15485, 16055, 16952, 21190, 24776, 25688, 27547, 30970, 32110, 40261, 42380, 55094, 61940, 64220, 80522, 84760, 110188, 123880, 128440, 137735, 161044, 201305, 220376, 275470, 322088, 402610, 523393, 550940, 805220, 1046786, 1101880, 1610440, 2093572, 2616965, 4187144, 5233930, 10467860, 20935720]

約数ペア:

[(1, 20935720), (2, 10467860), (4, 5233930), (5, 4187144), (8, 2616965), (10, 2093572), (13, 1610440), (19, 1101880), (20, 1046786), (26, 805220), (38, 550940), (40, 523393), (52, 402610), (65, 322088), (76, 275470), (95, 220376), (104, 201305), (130, 161044), (152, 137735), (163, 128440), (169, 123880), (190, 110188), (247, 84760), (260, 80522), (326, 64220), (338, 61940), (380, 55094), (494, 42380), (520, 40261), (652, 32110), (676, 30970), (760, 27547), (815, 25688), (845, 24776), (988, 21190), (1235, 16952), (1304, 16055), (1352, 15485), (1630, 12844), (1690, 12388), (1976, 10595), (2119, 9880), (2470, 8476), (3097, 6760), (3211, 6520), (3260, 6422), (3380, 6194), (4238, 4940)]