20449260

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{971}}^1$

素因数の和:1005

約数の個数: 120

約数和(自身を含む): 69155856

約数和(自身を除く): 48706596

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 81, 90, 108, 117, 130, 135, 156, 162, 180, 195, 234, 260, 270, 324, 351, 390, 405, 468, 540, 585, 702, 780, 810, 971, 1053, 1170, 1404, 1620, 1755, 1942, 2106, 2340, 2913, 3510, 3884, 4212, 4855, 5265, 5826, 7020, 8739, 9710, 10530, 11652, 12623, 14565, 17478, 19420, 21060, 25246, 26217, 29130, 34956, 37869, 43695, 50492, 52434, 58260, 63115, 75738, 78651, 87390, 104868, 113607, 126230, 131085, 151476, 157302, 174780, 189345, 227214, 252460, 262170, 314604, 340821, 378690, 393255, 454428, 524340, 568035, 681642, 757380, 786510, 1022463, 1136070, 1363284, 1573020, 1704105, 2044926, 2272140, 3408210, 4089852, 5112315, 6816420, 10224630, 20449260]

約数ペア:

[(1, 20449260), (2, 10224630), (3, 6816420), (4, 5112315), (5, 4089852), (6, 3408210), (9, 2272140), (10, 2044926), (12, 1704105), (13, 1573020), (15, 1363284), (18, 1136070), (20, 1022463), (26, 786510), (27, 757380), (30, 681642), (36, 568035), (39, 524340), (45, 454428), (52, 393255), (54, 378690), (60, 340821), (65, 314604), (78, 262170), (81, 252460), (90, 227214), (108, 189345), (117, 174780), (130, 157302), (135, 151476), (156, 131085), (162, 126230), (180, 113607), (195, 104868), (234, 87390), (260, 78651), (270, 75738), (324, 63115), (351, 58260), (390, 52434), (405, 50492), (468, 43695), (540, 37869), (585, 34956), (702, 29130), (780, 26217), (810, 25246), (971, 21060), (1053, 19420), (1170, 17478), (1404, 14565), (1620, 12623), (1755, 11652), (1942, 10530), (2106, 9710), (2340, 8739), (2913, 7020), (3510, 5826), (3884, 5265), (4212, 4855)]