88667140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{457}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 190436400

約数和(自身を除く): 101769260

約数列:

[1, 2, 4, 5, 10, 20, 89, 109, 178, 218, 356, 436, 445, 457, 545, 890, 914, 1090, 1780, 1828, 2180, 2285, 4570, 9140, 9701, 19402, 38804, 40673, 48505, 49813, 81346, 97010, 99626, 162692, 194020, 199252, 203365, 249065, 406730, 498130, 813460, 996260, 4433357, 8866714, 17733428, 22166785, 44333570, 88667140]

約数ペア:

[(1, 88667140), (2, 44333570), (4, 22166785), (5, 17733428), (10, 8866714), (20, 4433357), (89, 996260), (109, 813460), (178, 498130), (218, 406730), (356, 249065), (436, 203365), (445, 199252), (457, 194020), (545, 162692), (890, 99626), (914, 97010), (1090, 81346), (1780, 49813), (1828, 48505), (2180, 40673), (2285, 38804), (4570, 19402), (9140, 9701)]