491132140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:439

約数の個数: 96

約数和(自身を含む): 1123476480

約数和(自身を除く): 632344340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 107, 188, 190, 214, 235, 257, 380, 428, 470, 514, 535, 893, 940, 1028, 1070, 1285, 1786, 2033, 2140, 2570, 3572, 4066, 4465, 4883, 5029, 5140, 8132, 8930, 9766, 10058, 10165, 12079, 17860, 19532, 20116, 20330, 24158, 24415, 25145, 27499, 40660, 48316, 48830, 50290, 54998, 60395, 95551, 97660, 100580, 109996, 120790, 137495, 191102, 229501, 241580, 274990, 382204, 459002, 477755, 522481, 549980, 918004, 955510, 1044962, 1147505, 1292453, 1911020, 2089924, 2295010, 2584906, 2612405, 4590020, 5169812, 5224810, 6462265, 10449620, 12924530, 24556607, 25849060, 49113214, 98226428, 122783035, 245566070, 491132140]

約数ペア:

[(1, 491132140), (2, 245566070), (4, 122783035), (5, 98226428), (10, 49113214), (19, 25849060), (20, 24556607), (38, 12924530), (47, 10449620), (76, 6462265), (94, 5224810), (95, 5169812), (107, 4590020), (188, 2612405), (190, 2584906), (214, 2295010), (235, 2089924), (257, 1911020), (380, 1292453), (428, 1147505), (470, 1044962), (514, 955510), (535, 918004), (893, 549980), (940, 522481), (1028, 477755), (1070, 459002), (1285, 382204), (1786, 274990), (2033, 241580), (2140, 229501), (2570, 191102), (3572, 137495), (4066, 120790), (4465, 109996), (4883, 100580), (5029, 97660), (5140, 95551), (8132, 60395), (8930, 54998), (9766, 50290), (10058, 48830), (10165, 48316), (12079, 40660), (17860, 27499), (19532, 25145), (20116, 24415), (20330, 24158)]