19774980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1801}}^1$

素因数の和:1877

約数の個数: 72

約数和(自身を含む): 61001304

約数和(自身を除く): 41226324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1801, 1830, 2196, 2745, 3602, 3660, 5403, 5490, 7204, 9005, 10806, 10980, 16209, 18010, 21612, 27015, 32418, 36020, 54030, 64836, 81045, 108060, 109861, 162090, 219722, 324180, 329583, 439444, 549305, 659166, 988749, 1098610, 1318332, 1647915, 1977498, 2197220, 3295830, 3954996, 4943745, 6591660, 9887490, 19774980]

約数ペア:

[(1, 19774980), (2, 9887490), (3, 6591660), (4, 4943745), (5, 3954996), (6, 3295830), (9, 2197220), (10, 1977498), (12, 1647915), (15, 1318332), (18, 1098610), (20, 988749), (30, 659166), (36, 549305), (45, 439444), (60, 329583), (61, 324180), (90, 219722), (122, 162090), (180, 109861), (183, 108060), (244, 81045), (305, 64836), (366, 54030), (549, 36020), (610, 32418), (732, 27015), (915, 21612), (1098, 18010), (1220, 16209), (1801, 10980), (1830, 10806), (2196, 9005), (2745, 7204), (3602, 5490), (3660, 5403)]