28790320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:123

約数の個数: 160

約数和(自身を含む): 79994880

約数和(自身を除く): 51204560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 31, 38, 40, 47, 52, 62, 65, 76, 80, 94, 95, 104, 124, 130, 152, 155, 188, 190, 208, 235, 247, 248, 260, 304, 310, 376, 380, 403, 470, 494, 496, 520, 589, 611, 620, 752, 760, 806, 893, 940, 988, 1040, 1178, 1222, 1235, 1240, 1457, 1520, 1612, 1786, 1880, 1976, 2015, 2356, 2444, 2470, 2480, 2914, 2945, 3055, 3224, 3572, 3760, 3952, 4030, 4465, 4712, 4888, 4940, 5828, 5890, 6110, 6448, 7144, 7285, 7657, 8060, 8930, 9424, 9776, 9880, 11609, 11656, 11780, 12220, 14288, 14570, 15314, 16120, 17860, 18941, 19760, 23218, 23312, 23560, 24440, 27683, 29140, 30628, 32240, 35720, 37882, 38285, 46436, 47120, 48880, 55366, 58045, 58280, 61256, 71440, 75764, 76570, 92872, 94705, 110732, 116090, 116560, 122512, 138415, 151528, 153140, 185744, 189410, 221464, 232180, 276830, 303056, 306280, 359879, 378820, 442928, 464360, 553660, 612560, 719758, 757640, 928720, 1107320, 1439516, 1515280, 1799395, 2214640, 2879032, 3598790, 5758064, 7197580, 14395160, 28790320]

約数ペア:

[(1, 28790320), (2, 14395160), (4, 7197580), (5, 5758064), (8, 3598790), (10, 2879032), (13, 2214640), (16, 1799395), (19, 1515280), (20, 1439516), (26, 1107320), (31, 928720), (38, 757640), (40, 719758), (47, 612560), (52, 553660), (62, 464360), (65, 442928), (76, 378820), (80, 359879), (94, 306280), (95, 303056), (104, 276830), (124, 232180), (130, 221464), (152, 189410), (155, 185744), (188, 153140), (190, 151528), (208, 138415), (235, 122512), (247, 116560), (248, 116090), (260, 110732), (304, 94705), (310, 92872), (376, 76570), (380, 75764), (403, 71440), (470, 61256), (494, 58280), (496, 58045), (520, 55366), (589, 48880), (611, 47120), (620, 46436), (752, 38285), (760, 37882), (806, 35720), (893, 32240), (940, 30628), (988, 29140), (1040, 27683), (1178, 24440), (1222, 23560), (1235, 23312), (1240, 23218), (1457, 19760), (1520, 18941), (1612, 17860), (1786, 16120), (1880, 15314), (1976, 14570), (2015, 14288), (2356, 12220), (2444, 11780), (2470, 11656), (2480, 11609), (2914, 9880), (2945, 9776), (3055, 9424), (3224, 8930), (3572, 8060), (3760, 7657), (3952, 7285), (4030, 7144), (4465, 6448), (4712, 6110), (4888, 5890), (4940, 5828)]