20711340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 69346368

約数和(自身を除く): 48635028

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 53, 60, 65, 78, 90, 106, 117, 130, 156, 159, 167, 180, 195, 212, 234, 260, 265, 318, 334, 390, 468, 477, 501, 530, 585, 636, 668, 689, 780, 795, 835, 954, 1002, 1060, 1170, 1378, 1503, 1590, 1670, 1908, 2004, 2067, 2171, 2340, 2385, 2505, 2756, 3006, 3180, 3340, 3445, 4134, 4342, 4770, 5010, 6012, 6201, 6513, 6890, 7515, 8268, 8684, 8851, 9540, 10020, 10335, 10855, 12402, 13026, 13780, 15030, 17702, 19539, 20670, 21710, 24804, 26052, 26553, 30060, 31005, 32565, 35404, 39078, 41340, 43420, 44255, 53106, 62010, 65130, 78156, 79659, 88510, 97695, 106212, 115063, 124020, 130260, 132765, 159318, 177020, 195390, 230126, 265530, 318636, 345189, 390780, 398295, 460252, 531060, 575315, 690378, 796590, 1035567, 1150630, 1380756, 1593180, 1725945, 2071134, 2301260, 3451890, 4142268, 5177835, 6903780, 10355670, 20711340]

約数ペア:

[(1, 20711340), (2, 10355670), (3, 6903780), (4, 5177835), (5, 4142268), (6, 3451890), (9, 2301260), (10, 2071134), (12, 1725945), (13, 1593180), (15, 1380756), (18, 1150630), (20, 1035567), (26, 796590), (30, 690378), (36, 575315), (39, 531060), (45, 460252), (52, 398295), (53, 390780), (60, 345189), (65, 318636), (78, 265530), (90, 230126), (106, 195390), (117, 177020), (130, 159318), (156, 132765), (159, 130260), (167, 124020), (180, 115063), (195, 106212), (212, 97695), (234, 88510), (260, 79659), (265, 78156), (318, 65130), (334, 62010), (390, 53106), (468, 44255), (477, 43420), (501, 41340), (530, 39078), (585, 35404), (636, 32565), (668, 31005), (689, 30060), (780, 26553), (795, 26052), (835, 24804), (954, 21710), (1002, 20670), (1060, 19539), (1170, 17702), (1378, 15030), (1503, 13780), (1590, 13026), (1670, 12402), (1908, 10855), (2004, 10335), (2067, 10020), (2171, 9540), (2340, 8851), (2385, 8684), (2505, 8268), (2756, 7515), (3006, 6890), (3180, 6513), (3340, 6201), (3445, 6012), (4134, 5010), (4342, 4770)]