28405760

素因数分解:

$2^{12}\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:121

約数の個数: 104

約数和(自身を含む): 72736080

約数和(自身を除く): 44330320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 73, 76, 80, 95, 128, 146, 152, 160, 190, 256, 292, 304, 320, 365, 380, 512, 584, 608, 640, 730, 760, 1024, 1168, 1216, 1280, 1387, 1460, 1520, 2048, 2336, 2432, 2560, 2774, 2920, 3040, 4096, 4672, 4864, 5120, 5548, 5840, 6080, 6935, 9344, 9728, 10240, 11096, 11680, 12160, 13870, 18688, 19456, 20480, 22192, 23360, 24320, 27740, 37376, 38912, 44384, 46720, 48640, 55480, 74752, 77824, 88768, 93440, 97280, 110960, 149504, 177536, 186880, 194560, 221920, 299008, 355072, 373760, 389120, 443840, 710144, 747520, 887680, 1420288, 1495040, 1775360, 2840576, 3550720, 5681152, 7101440, 14202880, 28405760]

約数ペア:

[(1, 28405760), (2, 14202880), (4, 7101440), (5, 5681152), (8, 3550720), (10, 2840576), (16, 1775360), (19, 1495040), (20, 1420288), (32, 887680), (38, 747520), (40, 710144), (64, 443840), (73, 389120), (76, 373760), (80, 355072), (95, 299008), (128, 221920), (146, 194560), (152, 186880), (160, 177536), (190, 149504), (256, 110960), (292, 97280), (304, 93440), (320, 88768), (365, 77824), (380, 74752), (512, 55480), (584, 48640), (608, 46720), (640, 44384), (730, 38912), (760, 37376), (1024, 27740), (1168, 24320), (1216, 23360), (1280, 22192), (1387, 20480), (1460, 19456), (1520, 18688), (2048, 13870), (2336, 12160), (2432, 11680), (2560, 11096), (2774, 10240), (2920, 9728), (3040, 9344), (4096, 6935), (4672, 6080), (4864, 5840), (5120, 5548)]