20499960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{773}}^1$

素因数の和:817

約数の個数: 128

約数和(自身を含む): 70217280

約数和(自身を除く): 49717320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 773, 780, 884, 1020, 1105, 1326, 1546, 1560, 1768, 2040, 2210, 2319, 2652, 3092, 3315, 3865, 4420, 4638, 5304, 6184, 6630, 7730, 8840, 9276, 10049, 11595, 13141, 13260, 15460, 18552, 20098, 23190, 26282, 26520, 30147, 30920, 39423, 40196, 46380, 50245, 52564, 60294, 65705, 78846, 80392, 92760, 100490, 105128, 120588, 131410, 150735, 157692, 170833, 197115, 200980, 241176, 262820, 301470, 315384, 341666, 394230, 401960, 512499, 525640, 602940, 683332, 788460, 854165, 1024998, 1205880, 1366664, 1576920, 1708330, 2049996, 2562495, 3416660, 4099992, 5124990, 6833320, 10249980, 20499960]

約数ペア:

[(1, 20499960), (2, 10249980), (3, 6833320), (4, 5124990), (5, 4099992), (6, 3416660), (8, 2562495), (10, 2049996), (12, 1708330), (13, 1576920), (15, 1366664), (17, 1205880), (20, 1024998), (24, 854165), (26, 788460), (30, 683332), (34, 602940), (39, 525640), (40, 512499), (51, 401960), (52, 394230), (60, 341666), (65, 315384), (68, 301470), (78, 262820), (85, 241176), (102, 200980), (104, 197115), (120, 170833), (130, 157692), (136, 150735), (156, 131410), (170, 120588), (195, 105128), (204, 100490), (221, 92760), (255, 80392), (260, 78846), (312, 65705), (340, 60294), (390, 52564), (408, 50245), (442, 46380), (510, 40196), (520, 39423), (663, 30920), (680, 30147), (773, 26520), (780, 26282), (884, 23190), (1020, 20098), (1105, 18552), (1326, 15460), (1546, 13260), (1560, 13141), (1768, 11595), (2040, 10049), (2210, 9276), (2319, 8840), (2652, 7730), (3092, 6630), (3315, 6184), (3865, 5304), (4420, 4638)]