72720440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1283}}^1$

素因数の和:1416

約数の個数: 64

約数和(自身を含む): 177962400

約数和(自身を除く): 105241960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 436, 520, 545, 872, 1090, 1283, 1417, 2180, 2566, 2834, 4360, 5132, 5668, 6415, 7085, 10264, 11336, 12830, 14170, 16679, 25660, 28340, 33358, 51320, 56680, 66716, 83395, 133432, 139847, 166790, 279694, 333580, 559388, 667160, 699235, 1118776, 1398470, 1818011, 2796940, 3636022, 5593880, 7272044, 9090055, 14544088, 18180110, 36360220, 72720440]

約数ペア:

[(1, 72720440), (2, 36360220), (4, 18180110), (5, 14544088), (8, 9090055), (10, 7272044), (13, 5593880), (20, 3636022), (26, 2796940), (40, 1818011), (52, 1398470), (65, 1118776), (104, 699235), (109, 667160), (130, 559388), (218, 333580), (260, 279694), (436, 166790), (520, 139847), (545, 133432), (872, 83395), (1090, 66716), (1283, 56680), (1417, 51320), (2180, 33358), (2566, 28340), (2834, 25660), (4360, 16679), (5132, 14170), (5668, 12830), (6415, 11336), (7085, 10264)]