203938980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1074

約数の個数: 144

約数和(自身を含む): 674303616

約数和(自身を除く): 470364636

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 71, 84, 98, 105, 140, 142, 147, 196, 210, 213, 245, 284, 294, 355, 420, 426, 490, 497, 588, 710, 735, 852, 977, 980, 994, 1065, 1420, 1470, 1491, 1954, 1988, 2130, 2485, 2931, 2940, 2982, 3479, 3908, 4260, 4885, 4970, 5862, 5964, 6839, 6958, 7455, 9770, 9940, 10437, 11724, 13678, 13916, 14655, 14910, 17395, 19540, 20517, 20874, 27356, 29310, 29820, 34195, 34790, 41034, 41748, 47873, 52185, 58620, 68390, 69367, 69580, 82068, 95746, 102585, 104370, 136780, 138734, 143619, 191492, 205170, 208101, 208740, 239365, 277468, 287238, 346835, 410340, 416202, 478730, 485569, 574476, 693670, 718095, 832404, 957460, 971138, 1040505, 1387340, 1436190, 1456707, 1942276, 2081010, 2427845, 2872380, 2913414, 3398983, 4162020, 4855690, 5826828, 6797966, 7283535, 9711380, 10196949, 13595932, 14567070, 16994915, 20393898, 29134140, 33989830, 40787796, 50984745, 67979660, 101969490, 203938980]

約数ペア:

[(1, 203938980), (2, 101969490), (3, 67979660), (4, 50984745), (5, 40787796), (6, 33989830), (7, 29134140), (10, 20393898), (12, 16994915), (14, 14567070), (15, 13595932), (20, 10196949), (21, 9711380), (28, 7283535), (30, 6797966), (35, 5826828), (42, 4855690), (49, 4162020), (60, 3398983), (70, 2913414), (71, 2872380), (84, 2427845), (98, 2081010), (105, 1942276), (140, 1456707), (142, 1436190), (147, 1387340), (196, 1040505), (210, 971138), (213, 957460), (245, 832404), (284, 718095), (294, 693670), (355, 574476), (420, 485569), (426, 478730), (490, 416202), (497, 410340), (588, 346835), (710, 287238), (735, 277468), (852, 239365), (977, 208740), (980, 208101), (994, 205170), (1065, 191492), (1420, 143619), (1470, 138734), (1491, 136780), (1954, 104370), (1988, 102585), (2130, 95746), (2485, 82068), (2931, 69580), (2940, 69367), (2982, 68390), (3479, 58620), (3908, 52185), (4260, 47873), (4885, 41748), (4970, 41034), (5862, 34790), (5964, 34195), (6839, 29820), (6958, 29310), (7455, 27356), (9770, 20874), (9940, 20517), (10437, 19540), (11724, 17395), (13678, 14910), (13916, 14655)]