251551360

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{409}}^1$

素因数の和:490

約数の個数: 96

約数和(自身を含む): 622908900

約数和(自身を除く): 371357540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 409, 496, 620, 640, 818, 961, 992, 1240, 1636, 1922, 1984, 2045, 2480, 3272, 3844, 3968, 4090, 4805, 4960, 6544, 7688, 8180, 9610, 9920, 12679, 13088, 15376, 16360, 19220, 19840, 25358, 26176, 30752, 32720, 38440, 50716, 52352, 61504, 63395, 65440, 76880, 101432, 123008, 126790, 130880, 153760, 202864, 253580, 261760, 307520, 393049, 405728, 507160, 615040, 786098, 811456, 1014320, 1572196, 1622912, 1965245, 2028640, 3144392, 3930490, 4057280, 6288784, 7860980, 8114560, 12577568, 15721960, 25155136, 31443920, 50310272, 62887840, 125775680, 251551360]

約数ペア:

[(1, 251551360), (2, 125775680), (4, 62887840), (5, 50310272), (8, 31443920), (10, 25155136), (16, 15721960), (20, 12577568), (31, 8114560), (32, 7860980), (40, 6288784), (62, 4057280), (64, 3930490), (80, 3144392), (124, 2028640), (128, 1965245), (155, 1622912), (160, 1572196), (248, 1014320), (310, 811456), (320, 786098), (409, 615040), (496, 507160), (620, 405728), (640, 393049), (818, 307520), (961, 261760), (992, 253580), (1240, 202864), (1636, 153760), (1922, 130880), (1984, 126790), (2045, 123008), (2480, 101432), (3272, 76880), (3844, 65440), (3968, 63395), (4090, 61504), (4805, 52352), (4960, 50716), (6544, 38440), (7688, 32720), (8180, 30752), (9610, 26176), (9920, 25358), (12679, 19840), (13088, 19220), (15376, 16360)]