28547820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:324

約数の個数: 144

約数和(自身を含む): 100289280

約数和(自身を除く): 71741460

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 139, 140, 163, 180, 210, 252, 278, 315, 326, 417, 420, 489, 556, 630, 652, 695, 815, 834, 973, 978, 1141, 1251, 1260, 1390, 1467, 1630, 1668, 1946, 1956, 2085, 2282, 2445, 2502, 2780, 2919, 2934, 3260, 3423, 3892, 4170, 4564, 4865, 4890, 5004, 5705, 5838, 5868, 6255, 6846, 7335, 8340, 8757, 9730, 9780, 10269, 11410, 11676, 12510, 13692, 14595, 14670, 17115, 17514, 19460, 20538, 22657, 22820, 25020, 29190, 29340, 34230, 35028, 41076, 43785, 45314, 51345, 58380, 67971, 68460, 87570, 90628, 102690, 113285, 135942, 158599, 175140, 203913, 205380, 226570, 271884, 317198, 339855, 407826, 453140, 475797, 634396, 679710, 792995, 815652, 951594, 1019565, 1359420, 1427391, 1585990, 1903188, 2039130, 2378985, 2854782, 3171980, 4078260, 4757970, 5709564, 7136955, 9515940, 14273910, 28547820]

約数ペア:

[(1, 28547820), (2, 14273910), (3, 9515940), (4, 7136955), (5, 5709564), (6, 4757970), (7, 4078260), (9, 3171980), (10, 2854782), (12, 2378985), (14, 2039130), (15, 1903188), (18, 1585990), (20, 1427391), (21, 1359420), (28, 1019565), (30, 951594), (35, 815652), (36, 792995), (42, 679710), (45, 634396), (60, 475797), (63, 453140), (70, 407826), (84, 339855), (90, 317198), (105, 271884), (126, 226570), (139, 205380), (140, 203913), (163, 175140), (180, 158599), (210, 135942), (252, 113285), (278, 102690), (315, 90628), (326, 87570), (417, 68460), (420, 67971), (489, 58380), (556, 51345), (630, 45314), (652, 43785), (695, 41076), (815, 35028), (834, 34230), (973, 29340), (978, 29190), (1141, 25020), (1251, 22820), (1260, 22657), (1390, 20538), (1467, 19460), (1630, 17514), (1668, 17115), (1946, 14670), (1956, 14595), (2085, 13692), (2282, 12510), (2445, 11676), (2502, 11410), (2780, 10269), (2919, 9780), (2934, 9730), (3260, 8757), (3423, 8340), (3892, 7335), (4170, 6846), (4564, 6255), (4865, 5868), (4890, 5838), (5004, 5705)]