20121646480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1\times {\mathrm{29629}}^1$

素因数の和:30308

約数の個数: 80

約数和(自身を含む): 50460364080

約数和(自身を除く): 30338717600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 653, 1040, 1306, 2612, 3265, 5224, 6530, 8489, 10448, 13060, 16978, 26120, 29629, 33956, 42445, 52240, 59258, 67912, 84890, 118516, 135824, 148145, 169780, 237032, 296290, 339560, 385177, 474064, 592580, 679120, 770354, 1185160, 1540708, 1925885, 2370320, 3081416, 3851770, 6162832, 7703540, 15407080, 19347737, 30814160, 38695474, 77390948, 96738685, 154781896, 193477370, 251520581, 309563792, 386954740, 503041162, 773909480, 1006082324, 1257602905, 1547818960, 2012164648, 2515205810, 4024329296, 5030411620, 10060823240, 20121646480]

約数ペア:

[(1, 20121646480), (2, 10060823240), (4, 5030411620), (5, 4024329296), (8, 2515205810), (10, 2012164648), (13, 1547818960), (16, 1257602905), (20, 1006082324), (26, 773909480), (40, 503041162), (52, 386954740), (65, 309563792), (80, 251520581), (104, 193477370), (130, 154781896), (208, 96738685), (260, 77390948), (520, 38695474), (653, 30814160), (1040, 19347737), (1306, 15407080), (2612, 7703540), (3265, 6162832), (5224, 3851770), (6530, 3081416), (8489, 2370320), (10448, 1925885), (13060, 1540708), (16978, 1185160), (26120, 770354), (29629, 679120), (33956, 592580), (42445, 474064), (52240, 385177), (59258, 339560), (67912, 296290), (84890, 237032), (118516, 169780), (135824, 148145)]