51345920

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:701

約数の個数: 80

約数和(自身を含む): 127277568

約数和(自身を除く): 75931648

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, 496, 512, 620, 640, 647, 992, 1240, 1280, 1294, 1984, 2480, 2560, 2588, 3235, 3968, 4960, 5176, 6470, 7936, 9920, 10352, 12940, 15872, 19840, 20057, 20704, 25880, 39680, 40114, 41408, 51760, 79360, 80228, 82816, 100285, 103520, 160456, 165632, 200570, 207040, 320912, 331264, 401140, 414080, 641824, 802280, 828160, 1283648, 1604560, 1656320, 2567296, 3209120, 5134592, 6418240, 10269184, 12836480, 25672960, 51345920]

約数ペア:

[(1, 51345920), (2, 25672960), (4, 12836480), (5, 10269184), (8, 6418240), (10, 5134592), (16, 3209120), (20, 2567296), (31, 1656320), (32, 1604560), (40, 1283648), (62, 828160), (64, 802280), (80, 641824), (124, 414080), (128, 401140), (155, 331264), (160, 320912), (248, 207040), (256, 200570), (310, 165632), (320, 160456), (496, 103520), (512, 100285), (620, 82816), (640, 80228), (647, 79360), (992, 51760), (1240, 41408), (1280, 40114), (1294, 39680), (1984, 25880), (2480, 20704), (2560, 20057), (2588, 19840), (3235, 15872), (3968, 12940), (4960, 10352), (5176, 9920), (6470, 7936)]