2020403450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{181}}^1\times {\mathrm{1321}}^1$

素因数の和:1540

約数の個数: 72

約数和(自身を含む): 4094839476

約数和(自身を除く): 2074436026

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 181, 325, 338, 362, 650, 845, 905, 1321, 1690, 1810, 2353, 2642, 4225, 4525, 4706, 6605, 8450, 9050, 11765, 13210, 17173, 23530, 30589, 33025, 34346, 58825, 61178, 66050, 85865, 117650, 152945, 171730, 223249, 239101, 305890, 429325, 446498, 478202, 764725, 858650, 1116245, 1195505, 1529450, 2232490, 2391010, 3108313, 5581225, 5977525, 6216626, 11162450, 11955050, 15541565, 31083130, 40408069, 77707825, 80816138, 155415650, 202040345, 404080690, 1010201725, 2020403450]

約数ペア:

[(1, 2020403450), (2, 1010201725), (5, 404080690), (10, 202040345), (13, 155415650), (25, 80816138), (26, 77707825), (50, 40408069), (65, 31083130), (130, 15541565), (169, 11955050), (181, 11162450), (325, 6216626), (338, 5977525), (362, 5581225), (650, 3108313), (845, 2391010), (905, 2232490), (1321, 1529450), (1690, 1195505), (1810, 1116245), (2353, 858650), (2642, 764725), (4225, 478202), (4525, 446498), (4706, 429325), (6605, 305890), (8450, 239101), (9050, 223249), (11765, 171730), (13210, 152945), (17173, 117650), (23530, 85865), (30589, 66050), (33025, 61178), (34346, 58825)]