87021990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 144

約数和(自身を含む): 254702448

約数和(自身を除く): 167680458

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 61, 66, 90, 99, 110, 121, 122, 131, 165, 183, 198, 242, 262, 305, 330, 363, 366, 393, 495, 549, 605, 610, 655, 671, 726, 786, 915, 990, 1089, 1098, 1179, 1210, 1310, 1342, 1441, 1815, 1830, 1965, 2013, 2178, 2358, 2745, 2882, 3355, 3630, 3930, 4026, 4323, 5445, 5490, 5895, 6039, 6710, 7205, 7381, 7991, 8646, 10065, 10890, 11790, 12078, 12969, 14410, 14762, 15851, 15982, 20130, 21615, 22143, 23973, 25938, 30195, 31702, 36905, 39955, 43230, 44286, 47553, 47946, 60390, 64845, 66429, 71919, 73810, 79255, 79910, 87901, 95106, 110715, 119865, 129690, 132858, 142659, 143838, 158510, 175802, 221430, 237765, 239730, 263703, 285318, 332145, 359595, 439505, 475530, 527406, 664290, 713295, 719190, 791109, 879010, 966911, 1318515, 1426590, 1582218, 1933822, 2637030, 2900733, 3955545, 4834555, 5801466, 7911090, 8702199, 9669110, 14503665, 17404398, 29007330, 43510995, 87021990]

約数ペア:

[(1, 87021990), (2, 43510995), (3, 29007330), (5, 17404398), (6, 14503665), (9, 9669110), (10, 8702199), (11, 7911090), (15, 5801466), (18, 4834555), (22, 3955545), (30, 2900733), (33, 2637030), (45, 1933822), (55, 1582218), (61, 1426590), (66, 1318515), (90, 966911), (99, 879010), (110, 791109), (121, 719190), (122, 713295), (131, 664290), (165, 527406), (183, 475530), (198, 439505), (242, 359595), (262, 332145), (305, 285318), (330, 263703), (363, 239730), (366, 237765), (393, 221430), (495, 175802), (549, 158510), (605, 143838), (610, 142659), (655, 132858), (671, 129690), (726, 119865), (786, 110715), (915, 95106), (990, 87901), (1089, 79910), (1098, 79255), (1179, 73810), (1210, 71919), (1310, 66429), (1342, 64845), (1441, 60390), (1815, 47946), (1830, 47553), (1965, 44286), (2013, 43230), (2178, 39955), (2358, 36905), (2745, 31702), (2882, 30195), (3355, 25938), (3630, 23973), (3930, 22143), (4026, 21615), (4323, 20130), (5445, 15982), (5490, 15851), (5895, 14762), (6039, 14410), (6710, 12969), (7205, 12078), (7381, 11790), (7991, 10890), (8646, 10065)]