18625040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 80

約数和(自身を含む): 50234880

約数和(自身を除く): 31609840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 421, 553, 560, 632, 790, 842, 1106, 1264, 1580, 1684, 2105, 2212, 2765, 2947, 3160, 3368, 4210, 4424, 5530, 5894, 6320, 6736, 8420, 8848, 11060, 11788, 14735, 16840, 22120, 23576, 29470, 33259, 33680, 44240, 47152, 58940, 66518, 117880, 133036, 166295, 232813, 235760, 266072, 332590, 465626, 532144, 665180, 931252, 1164065, 1330360, 1862504, 2328130, 2660720, 3725008, 4656260, 9312520, 18625040]

約数ペア:

[(1, 18625040), (2, 9312520), (4, 4656260), (5, 3725008), (7, 2660720), (8, 2328130), (10, 1862504), (14, 1330360), (16, 1164065), (20, 931252), (28, 665180), (35, 532144), (40, 465626), (56, 332590), (70, 266072), (79, 235760), (80, 232813), (112, 166295), (140, 133036), (158, 117880), (280, 66518), (316, 58940), (395, 47152), (421, 44240), (553, 33680), (560, 33259), (632, 29470), (790, 23576), (842, 22120), (1106, 16840), (1264, 14735), (1580, 11788), (1684, 11060), (2105, 8848), (2212, 8420), (2765, 6736), (2947, 6320), (3160, 5894), (3368, 5530), (4210, 4424)]