30818920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{787}}^1$

素因数の和:898

約数の個数: 64

約数和(自身を含む): 76593600

約数和(自身を除く): 45774680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 787, 890, 979, 1574, 1780, 1958, 3148, 3560, 3916, 3935, 4895, 6296, 7832, 7870, 8657, 9790, 15740, 17314, 19580, 31480, 34628, 39160, 43285, 69256, 70043, 86570, 140086, 173140, 280172, 346280, 350215, 560344, 700430, 770473, 1400860, 1540946, 2801720, 3081892, 3852365, 6163784, 7704730, 15409460, 30818920]

約数ペア:

[(1, 30818920), (2, 15409460), (4, 7704730), (5, 6163784), (8, 3852365), (10, 3081892), (11, 2801720), (20, 1540946), (22, 1400860), (40, 770473), (44, 700430), (55, 560344), (88, 350215), (89, 346280), (110, 280172), (178, 173140), (220, 140086), (356, 86570), (440, 70043), (445, 69256), (712, 43285), (787, 39160), (890, 34628), (979, 31480), (1574, 19580), (1780, 17314), (1958, 15740), (3148, 9790), (3560, 8657), (3916, 7870), (3935, 7832), (4895, 6296)]