240830720

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:428

約数の個数: 144

約数和(自身を含む): 638194032

約数和(自身を除く): 397363312

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, 205, 208, 256, 260, 320, 328, 353, 410, 416, 520, 533, 640, 656, 706, 820, 832, 1040, 1066, 1280, 1312, 1412, 1640, 1664, 1765, 2080, 2132, 2624, 2665, 2824, 3280, 3328, 3530, 4160, 4264, 4589, 5248, 5330, 5648, 6560, 7060, 8320, 8528, 9178, 10496, 10660, 11296, 13120, 14120, 14473, 16640, 17056, 18356, 21320, 22592, 22945, 26240, 28240, 28946, 34112, 36712, 42640, 45184, 45890, 52480, 56480, 57892, 68224, 72365, 73424, 85280, 90368, 91780, 112960, 115784, 136448, 144730, 146848, 170560, 183560, 188149, 225920, 231568, 289460, 293696, 341120, 367120, 376298, 451840, 463136, 578920, 587392, 682240, 734240, 752596, 926272, 940745, 1157840, 1174784, 1468480, 1505192, 1852544, 1881490, 2315680, 2936960, 3010384, 3705088, 3762980, 4631360, 5873920, 6020768, 7525960, 9262720, 12041536, 15051920, 18525440, 24083072, 30103840, 48166144, 60207680, 120415360, 240830720]

約数ペア:

[(1, 240830720), (2, 120415360), (4, 60207680), (5, 48166144), (8, 30103840), (10, 24083072), (13, 18525440), (16, 15051920), (20, 12041536), (26, 9262720), (32, 7525960), (40, 6020768), (41, 5873920), (52, 4631360), (64, 3762980), (65, 3705088), (80, 3010384), (82, 2936960), (104, 2315680), (128, 1881490), (130, 1852544), (160, 1505192), (164, 1468480), (205, 1174784), (208, 1157840), (256, 940745), (260, 926272), (320, 752596), (328, 734240), (353, 682240), (410, 587392), (416, 578920), (520, 463136), (533, 451840), (640, 376298), (656, 367120), (706, 341120), (820, 293696), (832, 289460), (1040, 231568), (1066, 225920), (1280, 188149), (1312, 183560), (1412, 170560), (1640, 146848), (1664, 144730), (1765, 136448), (2080, 115784), (2132, 112960), (2624, 91780), (2665, 90368), (2824, 85280), (3280, 73424), (3328, 72365), (3530, 68224), (4160, 57892), (4264, 56480), (4589, 52480), (5248, 45890), (5330, 45184), (5648, 42640), (6560, 36712), (7060, 34112), (8320, 28946), (8528, 28240), (9178, 26240), (10496, 22945), (10660, 22592), (11296, 21320), (13120, 18356), (14120, 17056), (14473, 16640)]