205383680

素因数分解:

$2^{11}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:705

約数の個数: 96

約数和(自身を含む): 509483520

約数和(自身を除く): 304099840

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, 1024, 1240, 1280, 1294, 1984, 2048, 2480, 2560, 2588, 3235, 3968, 4960, 5120, 5176, 6470, 7936, 9920, 10240, 10352, 12940, 15872, 19840, 20057, 20704, 25880, 31744, 39680, 40114, 41408, 51760, 63488, 79360, 80228, 82816, 100285, 103520, 158720, 160456, 165632, 200570, 207040, 317440, 320912, 331264, 401140, 414080, 641824, 662528, 802280, 828160, 1283648, 1325056, 1604560, 1656320, 2567296, 3209120, 3312640, 5134592, 6418240, 6625280, 10269184, 12836480, 20538368, 25672960, 41076736, 51345920, 102691840, 205383680]

約数ペア:

[(1, 205383680), (2, 102691840), (4, 51345920), (5, 41076736), (8, 25672960), (10, 20538368), (16, 12836480), (20, 10269184), (31, 6625280), (32, 6418240), (40, 5134592), (62, 3312640), (64, 3209120), (80, 2567296), (124, 1656320), (128, 1604560), (155, 1325056), (160, 1283648), (248, 828160), (256, 802280), (310, 662528), (320, 641824), (496, 414080), (512, 401140), (620, 331264), (640, 320912), (647, 317440), (992, 207040), (1024, 200570), (1240, 165632), (1280, 160456), (1294, 158720), (1984, 103520), (2048, 100285), (2480, 82816), (2560, 80228), (2588, 79360), (3235, 63488), (3968, 51760), (4960, 41408), (5120, 40114), (5176, 39680), (6470, 31744), (7936, 25880), (9920, 20704), (10240, 20057), (10352, 19840), (12940, 15872)]