638754996

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{991}}^1$

素因数の和:1285

約数の個数: 96

約数和(自身を含む): 1719889920

約数和(自身を除く): 1081134924

約数列:

[1, 2, 3, 4, 6, 11, 12, 19, 22, 33, 38, 44, 57, 66, 76, 114, 132, 209, 228, 257, 418, 514, 627, 771, 836, 991, 1028, 1254, 1542, 1982, 2508, 2827, 2973, 3084, 3964, 4883, 5654, 5946, 8481, 9766, 10901, 11308, 11892, 14649, 16962, 18829, 19532, 21802, 29298, 32703, 33924, 37658, 43604, 53713, 56487, 58596, 65406, 75316, 107426, 112974, 130812, 161139, 207119, 214852, 225948, 254687, 322278, 414238, 509374, 621357, 644556, 764061, 828476, 1018748, 1242714, 1528122, 2485428, 2801557, 3056244, 4839053, 5603114, 8404671, 9678106, 11206228, 14517159, 16809342, 19356212, 29034318, 33618684, 53229583, 58068636, 106459166, 159688749, 212918332, 319377498, 638754996]

約数ペア:

[(1, 638754996), (2, 319377498), (3, 212918332), (4, 159688749), (6, 106459166), (11, 58068636), (12, 53229583), (19, 33618684), (22, 29034318), (33, 19356212), (38, 16809342), (44, 14517159), (57, 11206228), (66, 9678106), (76, 8404671), (114, 5603114), (132, 4839053), (209, 3056244), (228, 2801557), (257, 2485428), (418, 1528122), (514, 1242714), (627, 1018748), (771, 828476), (836, 764061), (991, 644556), (1028, 621357), (1254, 509374), (1542, 414238), (1982, 322278), (2508, 254687), (2827, 225948), (2973, 214852), (3084, 207119), (3964, 161139), (4883, 130812), (5654, 112974), (5946, 107426), (8481, 75316), (9766, 65406), (10901, 58596), (11308, 56487), (11892, 53713), (14649, 43604), (16962, 37658), (18829, 33924), (19532, 32703), (21802, 29298)]