20265420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 67683168

約数和(自身を除く): 47417748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 61, 70, 84, 98, 105, 113, 122, 140, 147, 183, 196, 210, 226, 244, 245, 294, 305, 339, 366, 420, 427, 452, 490, 565, 588, 610, 678, 732, 735, 791, 854, 915, 980, 1130, 1220, 1281, 1356, 1470, 1582, 1695, 1708, 1830, 2135, 2260, 2373, 2562, 2940, 2989, 3164, 3390, 3660, 3955, 4270, 4746, 5124, 5537, 5978, 6405, 6780, 6893, 7910, 8540, 8967, 9492, 11074, 11865, 11956, 12810, 13786, 14945, 15820, 16611, 17934, 20679, 22148, 23730, 25620, 27572, 27685, 29890, 33222, 34465, 35868, 41358, 44835, 47460, 48251, 55370, 59780, 66444, 68930, 82716, 83055, 89670, 96502, 103395, 110740, 137860, 144753, 166110, 179340, 193004, 206790, 241255, 289506, 332220, 337757, 413580, 482510, 579012, 675514, 723765, 965020, 1013271, 1351028, 1447530, 1688785, 2026542, 2895060, 3377570, 4053084, 5066355, 6755140, 10132710, 20265420]

約数ペア:

[(1, 20265420), (2, 10132710), (3, 6755140), (4, 5066355), (5, 4053084), (6, 3377570), (7, 2895060), (10, 2026542), (12, 1688785), (14, 1447530), (15, 1351028), (20, 1013271), (21, 965020), (28, 723765), (30, 675514), (35, 579012), (42, 482510), (49, 413580), (60, 337757), (61, 332220), (70, 289506), (84, 241255), (98, 206790), (105, 193004), (113, 179340), (122, 166110), (140, 144753), (147, 137860), (183, 110740), (196, 103395), (210, 96502), (226, 89670), (244, 83055), (245, 82716), (294, 68930), (305, 66444), (339, 59780), (366, 55370), (420, 48251), (427, 47460), (452, 44835), (490, 41358), (565, 35868), (588, 34465), (610, 33222), (678, 29890), (732, 27685), (735, 27572), (791, 25620), (854, 23730), (915, 22148), (980, 20679), (1130, 17934), (1220, 16611), (1281, 15820), (1356, 14945), (1470, 13786), (1582, 12810), (1695, 11956), (1708, 11865), (1830, 11074), (2135, 9492), (2260, 8967), (2373, 8540), (2562, 7910), (2940, 6893), (2989, 6780), (3164, 6405), (3390, 5978), (3660, 5537), (3955, 5124), (4270, 4746)]