64638920

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 149817600

約数和(自身を除く): 85178680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 89, 134, 178, 268, 271, 335, 356, 445, 536, 542, 670, 712, 890, 1084, 1340, 1355, 1780, 2168, 2680, 2710, 3560, 5420, 5963, 10840, 11926, 18157, 23852, 24119, 29815, 36314, 47704, 48238, 59630, 72628, 90785, 96476, 119260, 120595, 145256, 181570, 192952, 238520, 241190, 363140, 482380, 726280, 964760, 1615973, 3231946, 6463892, 8079865, 12927784, 16159730, 32319460, 64638920]

約数ペア:

[(1, 64638920), (2, 32319460), (4, 16159730), (5, 12927784), (8, 8079865), (10, 6463892), (20, 3231946), (40, 1615973), (67, 964760), (89, 726280), (134, 482380), (178, 363140), (268, 241190), (271, 238520), (335, 192952), (356, 181570), (445, 145256), (536, 120595), (542, 119260), (670, 96476), (712, 90785), (890, 72628), (1084, 59630), (1340, 48238), (1355, 47704), (1780, 36314), (2168, 29815), (2680, 24119), (2710, 23852), (3560, 18157), (5420, 11926), (5963, 10840)]