28407580

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 61316640

約数和(自身を除く): 32909060

約数列:

[1, 2, 4, 5, 10, 20, 83, 109, 157, 166, 218, 314, 332, 415, 436, 545, 628, 785, 830, 1090, 1570, 1660, 2180, 3140, 9047, 13031, 17113, 18094, 26062, 34226, 36188, 45235, 52124, 65155, 68452, 85565, 90470, 130310, 171130, 180940, 260620, 342260, 1420379, 2840758, 5681516, 7101895, 14203790, 28407580]

約数ペア:

[(1, 28407580), (2, 14203790), (4, 7101895), (5, 5681516), (10, 2840758), (20, 1420379), (83, 342260), (109, 260620), (157, 180940), (166, 171130), (218, 130310), (314, 90470), (332, 85565), (415, 68452), (436, 65155), (545, 52124), (628, 45235), (785, 36188), (830, 34226), (1090, 26062), (1570, 18094), (1660, 17113), (2180, 13031), (3140, 9047)]