213130640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 507824640

約数和(自身を除く): 294694000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 157, 239, 284, 314, 355, 478, 568, 628, 710, 785, 956, 1136, 1195, 1256, 1420, 1570, 1912, 2390, 2512, 2840, 3140, 3824, 4780, 5680, 6280, 9560, 11147, 12560, 16969, 19120, 22294, 33938, 37523, 44588, 55735, 67876, 75046, 84845, 89176, 111470, 135752, 150092, 169690, 178352, 187615, 222940, 271504, 300184, 339380, 375230, 445880, 600368, 678760, 750460, 891760, 1357520, 1500920, 2664133, 3001840, 5328266, 10656532, 13320665, 21313064, 26641330, 42626128, 53282660, 106565320, 213130640]

約数ペア:

[(1, 213130640), (2, 106565320), (4, 53282660), (5, 42626128), (8, 26641330), (10, 21313064), (16, 13320665), (20, 10656532), (40, 5328266), (71, 3001840), (80, 2664133), (142, 1500920), (157, 1357520), (239, 891760), (284, 750460), (314, 678760), (355, 600368), (478, 445880), (568, 375230), (628, 339380), (710, 300184), (785, 271504), (956, 222940), (1136, 187615), (1195, 178352), (1256, 169690), (1420, 150092), (1570, 135752), (1912, 111470), (2390, 89176), (2512, 84845), (2840, 75046), (3140, 67876), (3824, 55735), (4780, 44588), (5680, 37523), (6280, 33938), (9560, 22294), (11147, 19120), (12560, 16969)]