31703980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:224

約数の個数: 144

約数和(自身を含む): 89976096

約数和(自身を除く): 58272116

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 28, 34, 35, 44, 49, 55, 68, 70, 77, 85, 98, 110, 119, 140, 154, 170, 173, 187, 196, 220, 238, 245, 308, 340, 346, 374, 385, 476, 490, 539, 595, 692, 748, 770, 833, 865, 935, 980, 1078, 1190, 1211, 1309, 1540, 1666, 1730, 1870, 1903, 2156, 2380, 2422, 2618, 2695, 2941, 3332, 3460, 3740, 3806, 4165, 4844, 5236, 5390, 5882, 6055, 6545, 7612, 8330, 8477, 9163, 9515, 10780, 11764, 12110, 13090, 13321, 14705, 16660, 16954, 18326, 19030, 20587, 24220, 26180, 26642, 29410, 32351, 33908, 36652, 38060, 41174, 42385, 45815, 53284, 58820, 64702, 66605, 82348, 84770, 91630, 93247, 102935, 129404, 133210, 144109, 161755, 169540, 183260, 186494, 205870, 226457, 266420, 288218, 323510, 372988, 411740, 452914, 466235, 576436, 647020, 720545, 905828, 932470, 1132285, 1441090, 1585199, 1864940, 2264570, 2882180, 3170398, 4529140, 6340796, 7925995, 15851990, 31703980]

約数ペア:

[(1, 31703980), (2, 15851990), (4, 7925995), (5, 6340796), (7, 4529140), (10, 3170398), (11, 2882180), (14, 2264570), (17, 1864940), (20, 1585199), (22, 1441090), (28, 1132285), (34, 932470), (35, 905828), (44, 720545), (49, 647020), (55, 576436), (68, 466235), (70, 452914), (77, 411740), (85, 372988), (98, 323510), (110, 288218), (119, 266420), (140, 226457), (154, 205870), (170, 186494), (173, 183260), (187, 169540), (196, 161755), (220, 144109), (238, 133210), (245, 129404), (308, 102935), (340, 93247), (346, 91630), (374, 84770), (385, 82348), (476, 66605), (490, 64702), (539, 58820), (595, 53284), (692, 45815), (748, 42385), (770, 41174), (833, 38060), (865, 36652), (935, 33908), (980, 32351), (1078, 29410), (1190, 26642), (1211, 26180), (1309, 24220), (1540, 20587), (1666, 19030), (1730, 18326), (1870, 16954), (1903, 16660), (2156, 14705), (2380, 13321), (2422, 13090), (2618, 12110), (2695, 11764), (2941, 10780), (3332, 9515), (3460, 9163), (3740, 8477), (3806, 8330), (4165, 7612), (4844, 6545), (5236, 6055), (5390, 5882)]