18218996980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{13523}}^1$

素因数の和:13657

約数の個数: 96

約数和(自身を含む): 41223748608

約数和(自身を除く): 23004751628

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 53, 62, 82, 106, 124, 155, 164, 205, 212, 265, 310, 410, 530, 620, 820, 1060, 1271, 1643, 2173, 2542, 3286, 4346, 5084, 6355, 6572, 8215, 8692, 10865, 12710, 13523, 16430, 21730, 25420, 27046, 32860, 43460, 54092, 67363, 67615, 134726, 135230, 269452, 270460, 336815, 419213, 554443, 673630, 716719, 838426, 1108886, 1347260, 1433438, 1676852, 2096065, 2217772, 2772215, 2866876, 3583595, 4192130, 5544430, 7167190, 8384260, 11088860, 14334380, 17187733, 22218289, 29385479, 34375466, 44436578, 58770958, 68750932, 85938665, 88873156, 111091445, 117541916, 146927395, 171877330, 222182890, 293854790, 343754660, 444365780, 587709580, 910949849, 1821899698, 3643799396, 4554749245, 9109498490, 18218996980]

約数ペア:

[(1, 18218996980), (2, 9109498490), (4, 4554749245), (5, 3643799396), (10, 1821899698), (20, 910949849), (31, 587709580), (41, 444365780), (53, 343754660), (62, 293854790), (82, 222182890), (106, 171877330), (124, 146927395), (155, 117541916), (164, 111091445), (205, 88873156), (212, 85938665), (265, 68750932), (310, 58770958), (410, 44436578), (530, 34375466), (620, 29385479), (820, 22218289), (1060, 17187733), (1271, 14334380), (1643, 11088860), (2173, 8384260), (2542, 7167190), (3286, 5544430), (4346, 4192130), (5084, 3583595), (6355, 2866876), (6572, 2772215), (8215, 2217772), (8692, 2096065), (10865, 1676852), (12710, 1433438), (13523, 1347260), (16430, 1108886), (21730, 838426), (25420, 716719), (27046, 673630), (32860, 554443), (43460, 419213), (54092, 336815), (67363, 270460), (67615, 269452), (134726, 135230)]