31709860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 88482240

約数和(自身を除く): 56772380

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 49, 52, 65, 70, 76, 91, 95, 98, 130, 131, 133, 140, 182, 190, 196, 245, 247, 260, 262, 266, 364, 380, 455, 490, 494, 524, 532, 637, 655, 665, 910, 917, 931, 980, 988, 1235, 1274, 1310, 1330, 1703, 1729, 1820, 1834, 1862, 2470, 2489, 2548, 2620, 2660, 3185, 3406, 3458, 3668, 3724, 4585, 4655, 4940, 4978, 6370, 6419, 6812, 6916, 8515, 8645, 9170, 9310, 9956, 11921, 12103, 12445, 12740, 12838, 17030, 17290, 17423, 18340, 18620, 23842, 24206, 24890, 25676, 32095, 32357, 34060, 34580, 34846, 47684, 48412, 49780, 59605, 60515, 64190, 64714, 69692, 83447, 87115, 119210, 121030, 121961, 128380, 129428, 161785, 166894, 174230, 226499, 238420, 242060, 243922, 323570, 333788, 348460, 417235, 452998, 487844, 609805, 647140, 834470, 905996, 1132495, 1219610, 1585493, 1668940, 2264990, 2439220, 3170986, 4529980, 6341972, 7927465, 15854930, 31709860]

約数ペア:

[(1, 31709860), (2, 15854930), (4, 7927465), (5, 6341972), (7, 4529980), (10, 3170986), (13, 2439220), (14, 2264990), (19, 1668940), (20, 1585493), (26, 1219610), (28, 1132495), (35, 905996), (38, 834470), (49, 647140), (52, 609805), (65, 487844), (70, 452998), (76, 417235), (91, 348460), (95, 333788), (98, 323570), (130, 243922), (131, 242060), (133, 238420), (140, 226499), (182, 174230), (190, 166894), (196, 161785), (245, 129428), (247, 128380), (260, 121961), (262, 121030), (266, 119210), (364, 87115), (380, 83447), (455, 69692), (490, 64714), (494, 64190), (524, 60515), (532, 59605), (637, 49780), (655, 48412), (665, 47684), (910, 34846), (917, 34580), (931, 34060), (980, 32357), (988, 32095), (1235, 25676), (1274, 24890), (1310, 24206), (1330, 23842), (1703, 18620), (1729, 18340), (1820, 17423), (1834, 17290), (1862, 17030), (2470, 12838), (2489, 12740), (2548, 12445), (2620, 12103), (2660, 11921), (3185, 9956), (3406, 9310), (3458, 9170), (3668, 8645), (3724, 8515), (4585, 6916), (4655, 6812), (4940, 6419), (4978, 6370)]