31258240

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2$

素因数の和:79

約数の個数: 144

約数和(自身を含む): 85956930

約数和(自身を除く): 54698690

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 169, 170, 208, 221, 260, 272, 289, 320, 338, 340, 416, 442, 520, 544, 578, 640, 676, 680, 832, 845, 884, 1040, 1088, 1105, 1156, 1352, 1360, 1445, 1664, 1690, 1768, 2080, 2176, 2210, 2312, 2704, 2720, 2873, 2890, 3380, 3536, 3757, 4160, 4420, 4624, 5408, 5440, 5746, 5780, 6760, 7072, 7514, 8320, 8840, 9248, 10816, 10880, 11492, 11560, 13520, 14144, 14365, 15028, 17680, 18496, 18785, 21632, 22984, 23120, 27040, 28288, 28730, 30056, 35360, 36992, 37570, 45968, 46240, 48841, 54080, 57460, 60112, 70720, 75140, 91936, 92480, 97682, 108160, 114920, 120224, 141440, 150280, 183872, 184960, 195364, 229840, 240448, 244205, 300560, 367744, 390728, 459680, 480896, 488410, 601120, 781456, 919360, 976820, 1202240, 1562912, 1838720, 1953640, 2404480, 3125824, 3907280, 6251648, 7814560, 15629120, 31258240]

約数ペア:

[(1, 31258240), (2, 15629120), (4, 7814560), (5, 6251648), (8, 3907280), (10, 3125824), (13, 2404480), (16, 1953640), (17, 1838720), (20, 1562912), (26, 1202240), (32, 976820), (34, 919360), (40, 781456), (52, 601120), (64, 488410), (65, 480896), (68, 459680), (80, 390728), (85, 367744), (104, 300560), (128, 244205), (130, 240448), (136, 229840), (160, 195364), (169, 184960), (170, 183872), (208, 150280), (221, 141440), (260, 120224), (272, 114920), (289, 108160), (320, 97682), (338, 92480), (340, 91936), (416, 75140), (442, 70720), (520, 60112), (544, 57460), (578, 54080), (640, 48841), (676, 46240), (680, 45968), (832, 37570), (845, 36992), (884, 35360), (1040, 30056), (1088, 28730), (1105, 28288), (1156, 27040), (1352, 23120), (1360, 22984), (1445, 21632), (1664, 18785), (1690, 18496), (1768, 17680), (2080, 15028), (2176, 14365), (2210, 14144), (2312, 13520), (2704, 11560), (2720, 11492), (2873, 10880), (2890, 10816), (3380, 9248), (3536, 8840), (3757, 8320), (4160, 7514), (4420, 7072), (4624, 6760), (5408, 5780), (5440, 5746)]