642091840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:457

約数の個数: 168

約数和(自身を含む): 1713512448

約数和(自身を除く): 1071420608

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 260, 310, 320, 338, 383, 403, 416, 496, 520, 620, 676, 766, 806, 832, 845, 992, 1040, 1240, 1352, 1532, 1612, 1690, 1915, 1984, 2015, 2080, 2480, 2704, 3064, 3224, 3380, 3830, 4030, 4160, 4960, 4979, 5239, 5408, 6128, 6448, 6760, 7660, 8060, 9920, 9958, 10478, 10816, 11873, 12256, 12896, 13520, 15320, 16120, 19916, 20956, 23746, 24512, 24895, 25792, 26195, 27040, 30640, 32240, 39832, 41912, 47492, 49790, 52390, 54080, 59365, 61280, 64480, 64727, 79664, 83824, 94984, 99580, 104780, 118730, 122560, 128960, 129454, 154349, 159328, 167648, 189968, 199160, 209560, 237460, 258908, 308698, 318656, 323635, 335296, 379936, 398320, 419120, 474920, 517816, 617396, 647270, 759872, 771745, 796640, 838240, 949840, 1035632, 1234792, 1294540, 1543490, 1593280, 1676480, 1899680, 2006537, 2071264, 2469584, 2589080, 3086980, 3799360, 4013074, 4142528, 4939168, 5178160, 6173960, 8026148, 9878336, 10032685, 10356320, 12347920, 16052296, 20065370, 20712640, 24695840, 32104592, 40130740, 49391680, 64209184, 80261480, 128418368, 160522960, 321045920, 642091840]

約数ペア:

[(1, 642091840), (2, 321045920), (4, 160522960), (5, 128418368), (8, 80261480), (10, 64209184), (13, 49391680), (16, 40130740), (20, 32104592), (26, 24695840), (31, 20712640), (32, 20065370), (40, 16052296), (52, 12347920), (62, 10356320), (64, 10032685), (65, 9878336), (80, 8026148), (104, 6173960), (124, 5178160), (130, 4939168), (155, 4142528), (160, 4013074), (169, 3799360), (208, 3086980), (248, 2589080), (260, 2469584), (310, 2071264), (320, 2006537), (338, 1899680), (383, 1676480), (403, 1593280), (416, 1543490), (496, 1294540), (520, 1234792), (620, 1035632), (676, 949840), (766, 838240), (806, 796640), (832, 771745), (845, 759872), (992, 647270), (1040, 617396), (1240, 517816), (1352, 474920), (1532, 419120), (1612, 398320), (1690, 379936), (1915, 335296), (1984, 323635), (2015, 318656), (2080, 308698), (2480, 258908), (2704, 237460), (3064, 209560), (3224, 199160), (3380, 189968), (3830, 167648), (4030, 159328), (4160, 154349), (4960, 129454), (4979, 128960), (5239, 122560), (5408, 118730), (6128, 104780), (6448, 99580), (6760, 94984), (7660, 83824), (8060, 79664), (9920, 64727), (9958, 64480), (10478, 61280), (10816, 59365), (11873, 54080), (12256, 52390), (12896, 49790), (13520, 47492), (15320, 41912), (16120, 39832), (19916, 32240), (20956, 30640), (23746, 27040), (24512, 26195), (24895, 25792)]