205857920

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5273}}^1$

素因数の和:5353

約数の個数: 64

約数和(自身を含む): 500291640

約数和(自身を除く): 294433720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 2440, 3904, 4880, 5273, 7808, 9760, 10546, 19520, 21092, 26365, 39040, 42184, 52730, 84368, 105460, 168736, 210920, 321653, 337472, 421840, 643306, 674944, 843680, 1286612, 1608265, 1687360, 2573224, 3216530, 3374720, 5146448, 6433060, 10292896, 12866120, 20585792, 25732240, 41171584, 51464480, 102928960, 205857920]

約数ペア:

[(1, 205857920), (2, 102928960), (4, 51464480), (5, 41171584), (8, 25732240), (10, 20585792), (16, 12866120), (20, 10292896), (32, 6433060), (40, 5146448), (61, 3374720), (64, 3216530), (80, 2573224), (122, 1687360), (128, 1608265), (160, 1286612), (244, 843680), (305, 674944), (320, 643306), (488, 421840), (610, 337472), (640, 321653), (976, 210920), (1220, 168736), (1952, 105460), (2440, 84368), (3904, 52730), (4880, 42184), (5273, 39040), (7808, 26365), (9760, 21092), (10546, 19520)]