280309280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:287

約数の個数: 144

約数和(自身を含む): 732763584

約数和(自身を除く): 452454304

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 32, 38, 40, 46, 76, 80, 92, 95, 115, 152, 160, 184, 190, 211, 230, 304, 361, 368, 380, 422, 437, 460, 608, 722, 736, 760, 844, 874, 920, 1055, 1444, 1520, 1688, 1748, 1805, 1840, 2110, 2185, 2888, 3040, 3376, 3496, 3610, 3680, 4009, 4220, 4370, 4853, 5776, 6752, 6992, 7220, 8018, 8303, 8440, 8740, 9706, 11552, 13984, 14440, 16036, 16606, 16880, 17480, 19412, 20045, 24265, 28880, 32072, 33212, 33760, 34960, 38824, 40090, 41515, 48530, 57760, 64144, 66424, 69920, 76171, 77648, 80180, 83030, 92207, 97060, 128288, 132848, 152342, 155296, 160360, 166060, 184414, 194120, 265696, 304684, 320720, 332120, 368828, 380855, 388240, 461035, 609368, 641440, 664240, 737656, 761710, 776480, 922070, 1218736, 1328480, 1475312, 1523420, 1751933, 1844140, 2437472, 2950624, 3046840, 3503866, 3688280, 6093680, 7007732, 7376560, 8759665, 12187360, 14015464, 14753120, 17519330, 28030928, 35038660, 56061856, 70077320, 140154640, 280309280]

約数ペア:

[(1, 280309280), (2, 140154640), (4, 70077320), (5, 56061856), (8, 35038660), (10, 28030928), (16, 17519330), (19, 14753120), (20, 14015464), (23, 12187360), (32, 8759665), (38, 7376560), (40, 7007732), (46, 6093680), (76, 3688280), (80, 3503866), (92, 3046840), (95, 2950624), (115, 2437472), (152, 1844140), (160, 1751933), (184, 1523420), (190, 1475312), (211, 1328480), (230, 1218736), (304, 922070), (361, 776480), (368, 761710), (380, 737656), (422, 664240), (437, 641440), (460, 609368), (608, 461035), (722, 388240), (736, 380855), (760, 368828), (844, 332120), (874, 320720), (920, 304684), (1055, 265696), (1444, 194120), (1520, 184414), (1688, 166060), (1748, 160360), (1805, 155296), (1840, 152342), (2110, 132848), (2185, 128288), (2888, 97060), (3040, 92207), (3376, 83030), (3496, 80180), (3610, 77648), (3680, 76171), (4009, 69920), (4220, 66424), (4370, 64144), (4853, 57760), (5776, 48530), (6752, 41515), (6992, 40090), (7220, 38824), (8018, 34960), (8303, 33760), (8440, 33212), (8740, 32072), (9706, 28880), (11552, 24265), (13984, 20045), (14440, 19412), (16036, 17480), (16606, 16880)]