20943130

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 43747200

約数和(自身を除く): 22804070

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 61, 65, 95, 122, 130, 139, 190, 247, 278, 305, 494, 610, 695, 793, 1159, 1235, 1390, 1586, 1807, 2318, 2470, 2641, 3614, 3965, 5282, 5795, 7930, 8479, 9035, 11590, 13205, 15067, 16958, 18070, 26410, 30134, 34333, 42395, 68666, 75335, 84790, 110227, 150670, 161101, 171665, 220454, 322202, 343330, 551135, 805505, 1102270, 1611010, 2094313, 4188626, 10471565, 20943130]

約数ペア:

[(1, 20943130), (2, 10471565), (5, 4188626), (10, 2094313), (13, 1611010), (19, 1102270), (26, 805505), (38, 551135), (61, 343330), (65, 322202), (95, 220454), (122, 171665), (130, 161101), (139, 150670), (190, 110227), (247, 84790), (278, 75335), (305, 68666), (494, 42395), (610, 34333), (695, 30134), (793, 26410), (1159, 18070), (1235, 16958), (1390, 15067), (1586, 13205), (1807, 11590), (2318, 9035), (2470, 8479), (2641, 7930), (3614, 5795), (3965, 5282)]