64711900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:775

約数の個数: 72

約数和(自身を含む): 155146320

約数和(自身を除く): 90434420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 89, 100, 110, 178, 220, 275, 356, 445, 550, 661, 890, 979, 1100, 1322, 1780, 1958, 2225, 2644, 3305, 3916, 4450, 4895, 6610, 7271, 8900, 9790, 13220, 14542, 16525, 19580, 24475, 29084, 33050, 36355, 48950, 58829, 66100, 72710, 97900, 117658, 145420, 181775, 235316, 294145, 363550, 588290, 647119, 727100, 1176580, 1294238, 1470725, 2588476, 2941450, 3235595, 5882900, 6471190, 12942380, 16177975, 32355950, 64711900]

約数ペア:

[(1, 64711900), (2, 32355950), (4, 16177975), (5, 12942380), (10, 6471190), (11, 5882900), (20, 3235595), (22, 2941450), (25, 2588476), (44, 1470725), (50, 1294238), (55, 1176580), (89, 727100), (100, 647119), (110, 588290), (178, 363550), (220, 294145), (275, 235316), (356, 181775), (445, 145420), (550, 117658), (661, 97900), (890, 72710), (979, 66100), (1100, 58829), (1322, 48950), (1780, 36355), (1958, 33050), (2225, 29084), (2644, 24475), (3305, 19580), (3916, 16525), (4450, 14542), (4895, 13220), (6610, 9790), (7271, 8900)]