123485440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 328111056

約数和(自身を除く): 204625616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 41, 52, 64, 65, 80, 82, 104, 128, 130, 160, 164, 181, 205, 208, 256, 260, 320, 328, 362, 410, 416, 520, 533, 640, 656, 724, 820, 832, 905, 1040, 1066, 1280, 1312, 1448, 1640, 1664, 1810, 2080, 2132, 2353, 2624, 2665, 2896, 3280, 3328, 3620, 4160, 4264, 4706, 5248, 5330, 5792, 6560, 7240, 7421, 8320, 8528, 9412, 10496, 10660, 11584, 11765, 13120, 14480, 14842, 16640, 17056, 18824, 21320, 23168, 23530, 26240, 28960, 29684, 34112, 37105, 37648, 42640, 46336, 47060, 52480, 57920, 59368, 68224, 74210, 75296, 85280, 94120, 96473, 115840, 118736, 136448, 148420, 150592, 170560, 188240, 192946, 231680, 237472, 296840, 301184, 341120, 376480, 385892, 474944, 482365, 593680, 602368, 682240, 752960, 771784, 949888, 964730, 1187360, 1505920, 1543568, 1899776, 1929460, 2374720, 3011840, 3087136, 3858920, 4749440, 6174272, 7717840, 9498880, 12348544, 15435680, 24697088, 30871360, 61742720, 123485440]

約数ペア:

[(1, 123485440), (2, 61742720), (4, 30871360), (5, 24697088), (8, 15435680), (10, 12348544), (13, 9498880), (16, 7717840), (20, 6174272), (26, 4749440), (32, 3858920), (40, 3087136), (41, 3011840), (52, 2374720), (64, 1929460), (65, 1899776), (80, 1543568), (82, 1505920), (104, 1187360), (128, 964730), (130, 949888), (160, 771784), (164, 752960), (181, 682240), (205, 602368), (208, 593680), (256, 482365), (260, 474944), (320, 385892), (328, 376480), (362, 341120), (410, 301184), (416, 296840), (520, 237472), (533, 231680), (640, 192946), (656, 188240), (724, 170560), (820, 150592), (832, 148420), (905, 136448), (1040, 118736), (1066, 115840), (1280, 96473), (1312, 94120), (1448, 85280), (1640, 75296), (1664, 74210), (1810, 68224), (2080, 59368), (2132, 57920), (2353, 52480), (2624, 47060), (2665, 46336), (2896, 42640), (3280, 37648), (3328, 37105), (3620, 34112), (4160, 29684), (4264, 28960), (4706, 26240), (5248, 23530), (5330, 23168), (5792, 21320), (6560, 18824), (7240, 17056), (7421, 16640), (8320, 14842), (8528, 14480), (9412, 13120), (10496, 11765), (10660, 11584)]