28906880

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 72925920

約数和(自身を除く): 44019040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 47, 62, 64, 80, 94, 124, 128, 155, 160, 188, 235, 248, 310, 320, 376, 470, 496, 620, 640, 752, 940, 961, 992, 1240, 1457, 1504, 1880, 1922, 1984, 2480, 2914, 3008, 3760, 3844, 3968, 4805, 4960, 5828, 6016, 7285, 7520, 7688, 9610, 9920, 11656, 14570, 15040, 15376, 19220, 19840, 23312, 29140, 30080, 30752, 38440, 45167, 46624, 58280, 61504, 76880, 90334, 93248, 116560, 123008, 153760, 180668, 186496, 225835, 233120, 307520, 361336, 451670, 466240, 615040, 722672, 903340, 932480, 1445344, 1806680, 2890688, 3613360, 5781376, 7226720, 14453440, 28906880]

約数ペア:

[(1, 28906880), (2, 14453440), (4, 7226720), (5, 5781376), (8, 3613360), (10, 2890688), (16, 1806680), (20, 1445344), (31, 932480), (32, 903340), (40, 722672), (47, 615040), (62, 466240), (64, 451670), (80, 361336), (94, 307520), (124, 233120), (128, 225835), (155, 186496), (160, 180668), (188, 153760), (235, 123008), (248, 116560), (310, 93248), (320, 90334), (376, 76880), (470, 61504), (496, 58280), (620, 46624), (640, 45167), (752, 38440), (940, 30752), (961, 30080), (992, 29140), (1240, 23312), (1457, 19840), (1504, 19220), (1880, 15376), (1922, 15040), (1984, 14570), (2480, 11656), (2914, 9920), (3008, 9610), (3760, 7688), (3844, 7520), (3968, 7285), (4805, 6016), (4960, 5828)]