15521920

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 37699200

約数和(自身を除く): 22177280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 307, 316, 320, 395, 614, 632, 640, 790, 1228, 1264, 1535, 1580, 2456, 2528, 3070, 3160, 4912, 5056, 6140, 6320, 9824, 10112, 12280, 12640, 19648, 24253, 24560, 25280, 39296, 48506, 49120, 50560, 97012, 98240, 121265, 194024, 196480, 242530, 388048, 485060, 776096, 970120, 1552192, 1940240, 3104384, 3880480, 7760960, 15521920]

約数ペア:

[(1, 15521920), (2, 7760960), (4, 3880480), (5, 3104384), (8, 1940240), (10, 1552192), (16, 970120), (20, 776096), (32, 485060), (40, 388048), (64, 242530), (79, 196480), (80, 194024), (128, 121265), (158, 98240), (160, 97012), (307, 50560), (316, 49120), (320, 48506), (395, 39296), (614, 25280), (632, 24560), (640, 24253), (790, 19648), (1228, 12640), (1264, 12280), (1535, 10112), (1580, 9824), (2456, 6320), (2528, 6140), (3070, 5056), (3160, 4912)]