21409661440

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{269779}}^1$

素因数の和:269833

約数の個数: 80

約数和(自身を含む): 52989108480

約数和(自身を除く): 31579447040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 7936, 9920, 15872, 19840, 39680, 79360, 269779, 539558, 1079116, 1348895, 2158232, 2697790, 4316464, 5395580, 8363149, 8632928, 10791160, 16726298, 17265856, 21582320, 33452596, 34531712, 41815745, 43164640, 66905192, 69063424, 83631490, 86329280, 133810384, 138126848, 167262980, 172658560, 267620768, 334525960, 345317120, 535241536, 669051920, 690634240, 1070483072, 1338103840, 2140966144, 2676207680, 4281932288, 5352415360, 10704830720, 21409661440]

約数ペア:

[(1, 21409661440), (2, 10704830720), (4, 5352415360), (5, 4281932288), (8, 2676207680), (10, 2140966144), (16, 1338103840), (20, 1070483072), (31, 690634240), (32, 669051920), (40, 535241536), (62, 345317120), (64, 334525960), (80, 267620768), (124, 172658560), (128, 167262980), (155, 138126848), (160, 133810384), (248, 86329280), (256, 83631490), (310, 69063424), (320, 66905192), (496, 43164640), (512, 41815745), (620, 34531712), (640, 33452596), (992, 21582320), (1240, 17265856), (1280, 16726298), (1984, 10791160), (2480, 8632928), (2560, 8363149), (3968, 5395580), (4960, 4316464), (7936, 2697790), (9920, 2158232), (15872, 1348895), (19840, 1079116), (39680, 539558), (79360, 269779)]