278791340

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{281}}^1\times {\mathrm{439}}^1$

素因数の和:842

約数の個数: 48

約数和(自身を含む): 594095040

約数和(自身を除く): 315303700

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 281, 439, 452, 562, 565, 878, 1124, 1130, 1405, 1756, 2195, 2260, 2810, 4390, 5620, 8780, 31753, 49607, 63506, 99214, 123359, 127012, 158765, 198428, 246718, 248035, 317530, 493436, 496070, 616795, 635060, 992140, 1233590, 2467180, 13939567, 27879134, 55758268, 69697835, 139395670, 278791340]

約数ペア:

[(1, 278791340), (2, 139395670), (4, 69697835), (5, 55758268), (10, 27879134), (20, 13939567), (113, 2467180), (226, 1233590), (281, 992140), (439, 635060), (452, 616795), (562, 496070), (565, 493436), (878, 317530), (1124, 248035), (1130, 246718), (1405, 198428), (1756, 158765), (2195, 127012), (2260, 123359), (2810, 99214), (4390, 63506), (5620, 49607), (8780, 31753)]