20486560900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{144577}}^1$

素因数の和:144713

約数の個数: 72

約数和(自身を含む): 48315076040

約数和(自身を除く): 27828515140

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 109, 130, 218, 260, 325, 436, 545, 650, 1090, 1300, 1417, 2180, 2725, 2834, 5450, 5668, 7085, 10900, 14170, 28340, 35425, 70850, 141700, 144577, 289154, 578308, 722885, 1445770, 1879501, 2891540, 3614425, 3759002, 7228850, 7518004, 9397505, 14457700, 15758893, 18795010, 31517786, 37590020, 46987525, 63035572, 78794465, 93975050, 157588930, 187950100, 204865609, 315177860, 393972325, 409731218, 787944650, 819462436, 1024328045, 1575889300, 2048656090, 4097312180, 5121640225, 10243280450, 20486560900]

約数ペア:

[(1, 20486560900), (2, 10243280450), (4, 5121640225), (5, 4097312180), (10, 2048656090), (13, 1575889300), (20, 1024328045), (25, 819462436), (26, 787944650), (50, 409731218), (52, 393972325), (65, 315177860), (100, 204865609), (109, 187950100), (130, 157588930), (218, 93975050), (260, 78794465), (325, 63035572), (436, 46987525), (545, 37590020), (650, 31517786), (1090, 18795010), (1300, 15758893), (1417, 14457700), (2180, 9397505), (2725, 7518004), (2834, 7228850), (5450, 3759002), (5668, 3614425), (7085, 2891540), (10900, 1879501), (14170, 1445770), (28340, 722885), (35425, 578308), (70850, 289154), (141700, 144577)]