161661590

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:285

約数の個数: 64

約数和(自身を含む): 311980032

約数和(自身を除く): 150318442

約数列:

[1, 2, 5, 10, 31, 61, 62, 83, 103, 122, 155, 166, 206, 305, 310, 415, 515, 610, 830, 1030, 1891, 2573, 3193, 3782, 5063, 5146, 6283, 6386, 8549, 9455, 10126, 12566, 12865, 15965, 17098, 18910, 25315, 25730, 31415, 31930, 42745, 50630, 62830, 85490, 156953, 194773, 265019, 313906, 389546, 521489, 530038, 784765, 973865, 1042978, 1325095, 1569530, 1947730, 2607445, 2650190, 5214890, 16166159, 32332318, 80830795, 161661590]

約数ペア:

[(1, 161661590), (2, 80830795), (5, 32332318), (10, 16166159), (31, 5214890), (61, 2650190), (62, 2607445), (83, 1947730), (103, 1569530), (122, 1325095), (155, 1042978), (166, 973865), (206, 784765), (305, 530038), (310, 521489), (415, 389546), (515, 313906), (610, 265019), (830, 194773), (1030, 156953), (1891, 85490), (2573, 62830), (3193, 50630), (3782, 42745), (5063, 31930), (5146, 31415), (6283, 25730), (6386, 25315), (8549, 18910), (9455, 17098), (10126, 15965), (12566, 12865)]