19902620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{683}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 44126208

約数和(自身を除く): 24223588

約数列:

[1, 2, 4, 5, 10, 20, 31, 47, 62, 94, 124, 155, 188, 235, 310, 470, 620, 683, 940, 1366, 1457, 2732, 2914, 3415, 5828, 6830, 7285, 13660, 14570, 21173, 29140, 32101, 42346, 64202, 84692, 105865, 128404, 160505, 211730, 321010, 423460, 642020, 995131, 1990262, 3980524, 4975655, 9951310, 19902620]

約数ペア:

[(1, 19902620), (2, 9951310), (4, 4975655), (5, 3980524), (10, 1990262), (20, 995131), (31, 642020), (47, 423460), (62, 321010), (94, 211730), (124, 160505), (155, 128404), (188, 105865), (235, 84692), (310, 64202), (470, 42346), (620, 32101), (683, 29140), (940, 21173), (1366, 14570), (1457, 13660), (2732, 7285), (2914, 6830), (3415, 5828)]