64916480

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:465

約数の個数: 88

約数和(自身を含む): 161139840

約数和(自身を除く): 96223360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 409, 496, 512, 620, 640, 818, 992, 1024, 1240, 1280, 1636, 1984, 2045, 2480, 2560, 3272, 3968, 4090, 4960, 5120, 6544, 7936, 8180, 9920, 12679, 13088, 15872, 16360, 19840, 25358, 26176, 31744, 32720, 39680, 50716, 52352, 63395, 65440, 79360, 101432, 104704, 126790, 130880, 158720, 202864, 209408, 253580, 261760, 405728, 418816, 507160, 523520, 811456, 1014320, 1047040, 1622912, 2028640, 2094080, 3245824, 4057280, 6491648, 8114560, 12983296, 16229120, 32458240, 64916480]

約数ペア:

[(1, 64916480), (2, 32458240), (4, 16229120), (5, 12983296), (8, 8114560), (10, 6491648), (16, 4057280), (20, 3245824), (31, 2094080), (32, 2028640), (40, 1622912), (62, 1047040), (64, 1014320), (80, 811456), (124, 523520), (128, 507160), (155, 418816), (160, 405728), (248, 261760), (256, 253580), (310, 209408), (320, 202864), (409, 158720), (496, 130880), (512, 126790), (620, 104704), (640, 101432), (818, 79360), (992, 65440), (1024, 63395), (1240, 52352), (1280, 50716), (1636, 39680), (1984, 32720), (2045, 31744), (2480, 26176), (2560, 25358), (3272, 19840), (3968, 16360), (4090, 15872), (4960, 13088), (5120, 12679), (6544, 9920), (7936, 8180)]