78951980

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1\times {\mathrm{353}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 170208864

約数和(自身を除く): 91256884

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 211, 212, 265, 353, 422, 530, 706, 844, 1055, 1060, 1412, 1765, 2110, 3530, 4220, 7060, 11183, 18709, 22366, 37418, 44732, 55915, 74483, 74836, 93545, 111830, 148966, 187090, 223660, 297932, 372415, 374180, 744830, 1489660, 3947599, 7895198, 15790396, 19737995, 39475990, 78951980]

約数ペア:

[(1, 78951980), (2, 39475990), (4, 19737995), (5, 15790396), (10, 7895198), (20, 3947599), (53, 1489660), (106, 744830), (211, 374180), (212, 372415), (265, 297932), (353, 223660), (422, 187090), (530, 148966), (706, 111830), (844, 93545), (1055, 74836), (1060, 74483), (1412, 55915), (1765, 44732), (2110, 37418), (3530, 22366), (4220, 18709), (7060, 11183)]