31320120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1181}}^1$

素因数の和:1225

約数の個数: 128

約数和(自身を含む): 107231040

約数和(自身を除く): 75910920

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, 780, 884, 1020, 1105, 1181, 1326, 1560, 1768, 2040, 2210, 2362, 2652, 3315, 3543, 4420, 4724, 5304, 5905, 6630, 7086, 8840, 9448, 11810, 13260, 14172, 15353, 17715, 20077, 23620, 26520, 28344, 30706, 35430, 40154, 46059, 47240, 60231, 61412, 70860, 76765, 80308, 92118, 100385, 120462, 122824, 141720, 153530, 160616, 184236, 200770, 230295, 240924, 261001, 301155, 307060, 368472, 401540, 460590, 481848, 522002, 602310, 614120, 783003, 803080, 921180, 1044004, 1204620, 1305005, 1566006, 1842360, 2088008, 2409240, 2610010, 3132012, 3915015, 5220020, 6264024, 7830030, 10440040, 15660060, 31320120]

約数ペア:

[(1, 31320120), (2, 15660060), (3, 10440040), (4, 7830030), (5, 6264024), (6, 5220020), (8, 3915015), (10, 3132012), (12, 2610010), (13, 2409240), (15, 2088008), (17, 1842360), (20, 1566006), (24, 1305005), (26, 1204620), (30, 1044004), (34, 921180), (39, 803080), (40, 783003), (51, 614120), (52, 602310), (60, 522002), (65, 481848), (68, 460590), (78, 401540), (85, 368472), (102, 307060), (104, 301155), (120, 261001), (130, 240924), (136, 230295), (156, 200770), (170, 184236), (195, 160616), (204, 153530), (221, 141720), (255, 122824), (260, 120462), (312, 100385), (340, 92118), (390, 80308), (408, 76765), (442, 70860), (510, 61412), (520, 60231), (663, 47240), (680, 46059), (780, 40154), (884, 35430), (1020, 30706), (1105, 28344), (1181, 26520), (1326, 23620), (1560, 20077), (1768, 17715), (2040, 15353), (2210, 14172), (2362, 13260), (2652, 11810), (3315, 9448), (3543, 8840), (4420, 7086), (4724, 6630), (5304, 5905)]