28540680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:639

約数の個数: 128

約数和(自身を含む): 99636480

約数和(自身を除く): 71095800

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 420, 427, 488, 557, 610, 732, 840, 854, 915, 1114, 1220, 1281, 1464, 1671, 1708, 1830, 2135, 2228, 2440, 2562, 2785, 3342, 3416, 3660, 3899, 4270, 4456, 5124, 5570, 6405, 6684, 7320, 7798, 8355, 8540, 10248, 11140, 11697, 12810, 13368, 15596, 16710, 17080, 19495, 22280, 23394, 25620, 31192, 33420, 33977, 38990, 46788, 51240, 58485, 66840, 67954, 77980, 93576, 101931, 116970, 135908, 155960, 169885, 203862, 233940, 237839, 271816, 339770, 407724, 467880, 475678, 509655, 679540, 713517, 815448, 951356, 1019310, 1189195, 1359080, 1427034, 1902712, 2038620, 2378390, 2854068, 3567585, 4077240, 4756780, 5708136, 7135170, 9513560, 14270340, 28540680]

約数ペア:

[(1, 28540680), (2, 14270340), (3, 9513560), (4, 7135170), (5, 5708136), (6, 4756780), (7, 4077240), (8, 3567585), (10, 2854068), (12, 2378390), (14, 2038620), (15, 1902712), (20, 1427034), (21, 1359080), (24, 1189195), (28, 1019310), (30, 951356), (35, 815448), (40, 713517), (42, 679540), (56, 509655), (60, 475678), (61, 467880), (70, 407724), (84, 339770), (105, 271816), (120, 237839), (122, 233940), (140, 203862), (168, 169885), (183, 155960), (210, 135908), (244, 116970), (280, 101931), (305, 93576), (366, 77980), (420, 67954), (427, 66840), (488, 58485), (557, 51240), (610, 46788), (732, 38990), (840, 33977), (854, 33420), (915, 31192), (1114, 25620), (1220, 23394), (1281, 22280), (1464, 19495), (1671, 17080), (1708, 16710), (1830, 15596), (2135, 13368), (2228, 12810), (2440, 11697), (2562, 11140), (2785, 10248), (3342, 8540), (3416, 8355), (3660, 7798), (3899, 7320), (4270, 6684), (4456, 6405), (5124, 5570)]