21011640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13469}}^1$

素因数の和:13496

約数の個数: 64

約数和(自身を含む): 67888800

約数和(自身を除く): 46877160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13469, 26938, 40407, 53876, 67345, 80814, 107752, 134690, 161628, 175097, 202035, 269380, 323256, 350194, 404070, 525291, 538760, 700388, 808140, 875485, 1050582, 1400776, 1616280, 1750970, 2101164, 2626455, 3501940, 4202328, 5252910, 7003880, 10505820, 21011640]

約数ペア:

[(1, 21011640), (2, 10505820), (3, 7003880), (4, 5252910), (5, 4202328), (6, 3501940), (8, 2626455), (10, 2101164), (12, 1750970), (13, 1616280), (15, 1400776), (20, 1050582), (24, 875485), (26, 808140), (30, 700388), (39, 538760), (40, 525291), (52, 404070), (60, 350194), (65, 323256), (78, 269380), (104, 202035), (120, 175097), (130, 161628), (156, 134690), (195, 107752), (260, 80814), (312, 67345), (390, 53876), (520, 40407), (780, 26938), (1560, 13469)]