820193640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1753}}^1$

素因数の和:2331

約数の個数: 128

約数和(自身を含む): 2818748160

約数和(自身を除く): 1998554520

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, 70, 84, 105, 120, 140, 168, 210, 280, 420, 557, 840, 1114, 1671, 1753, 2228, 2785, 3342, 3506, 3899, 4456, 5259, 5570, 6684, 7012, 7798, 8355, 8765, 10518, 11140, 11697, 12271, 13368, 14024, 15596, 16710, 17530, 19495, 21036, 22280, 23394, 24542, 26295, 31192, 33420, 35060, 36813, 38990, 42072, 46788, 49084, 52590, 58485, 61355, 66840, 70120, 73626, 77980, 93576, 98168, 105180, 116970, 122710, 147252, 155960, 184065, 210360, 233940, 245420, 294504, 368130, 467880, 490840, 736260, 976421, 1472520, 1952842, 2929263, 3905684, 4882105, 5858526, 6834947, 7811368, 9764210, 11717052, 13669894, 14646315, 19528420, 20504841, 23434104, 27339788, 29292630, 34174735, 39056840, 41009682, 54679576, 58585260, 68349470, 82019364, 102524205, 117170520, 136698940, 164038728, 205048410, 273397880, 410096820, 820193640]

約数ペア:

[(1, 820193640), (2, 410096820), (3, 273397880), (4, 205048410), (5, 164038728), (6, 136698940), (7, 117170520), (8, 102524205), (10, 82019364), (12, 68349470), (14, 58585260), (15, 54679576), (20, 41009682), (21, 39056840), (24, 34174735), (28, 29292630), (30, 27339788), (35, 23434104), (40, 20504841), (42, 19528420), (56, 14646315), (60, 13669894), (70, 11717052), (84, 9764210), (105, 7811368), (120, 6834947), (140, 5858526), (168, 4882105), (210, 3905684), (280, 2929263), (420, 1952842), (557, 1472520), (840, 976421), (1114, 736260), (1671, 490840), (1753, 467880), (2228, 368130), (2785, 294504), (3342, 245420), (3506, 233940), (3899, 210360), (4456, 184065), (5259, 155960), (5570, 147252), (6684, 122710), (7012, 116970), (7798, 105180), (8355, 98168), (8765, 93576), (10518, 77980), (11140, 73626), (11697, 70120), (12271, 66840), (13368, 61355), (14024, 58485), (15596, 52590), (16710, 49084), (17530, 46788), (19495, 42072), (21036, 38990), (22280, 36813), (23394, 35060), (24542, 33420), (26295, 31192)]