20435740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1483}}^1$

素因数の和:1558

約数の個数: 48

約数和(自身を含む): 47119968

約数和(自身を除く): 26684228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 1483, 2756, 2966, 3445, 5932, 6890, 7415, 13780, 14830, 19279, 29660, 38558, 77116, 78599, 96395, 157198, 192790, 314396, 385580, 392995, 785990, 1021787, 1571980, 2043574, 4087148, 5108935, 10217870, 20435740]

約数ペア:

[(1, 20435740), (2, 10217870), (4, 5108935), (5, 4087148), (10, 2043574), (13, 1571980), (20, 1021787), (26, 785990), (52, 392995), (53, 385580), (65, 314396), (106, 192790), (130, 157198), (212, 96395), (260, 78599), (265, 77116), (530, 38558), (689, 29660), (1060, 19279), (1378, 14830), (1483, 13780), (2756, 7415), (2966, 6890), (3445, 5932)]