81549680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{983}}^1$

素因数の和:1074

約数の個数: 80

約数和(自身を含む): 204254784

約数和(自身を除く): 122705104

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 61, 68, 80, 85, 122, 136, 170, 244, 272, 305, 340, 488, 610, 680, 976, 983, 1037, 1220, 1360, 1966, 2074, 2440, 3932, 4148, 4880, 4915, 5185, 7864, 8296, 9830, 10370, 15728, 16592, 16711, 19660, 20740, 33422, 39320, 41480, 59963, 66844, 78640, 82960, 83555, 119926, 133688, 167110, 239852, 267376, 299815, 334220, 479704, 599630, 668440, 959408, 1019371, 1199260, 1336880, 2038742, 2398520, 4077484, 4797040, 5096855, 8154968, 10193710, 16309936, 20387420, 40774840, 81549680]

約数ペア:

[(1, 81549680), (2, 40774840), (4, 20387420), (5, 16309936), (8, 10193710), (10, 8154968), (16, 5096855), (17, 4797040), (20, 4077484), (34, 2398520), (40, 2038742), (61, 1336880), (68, 1199260), (80, 1019371), (85, 959408), (122, 668440), (136, 599630), (170, 479704), (244, 334220), (272, 299815), (305, 267376), (340, 239852), (488, 167110), (610, 133688), (680, 119926), (976, 83555), (983, 82960), (1037, 78640), (1220, 66844), (1360, 59963), (1966, 41480), (2074, 39320), (2440, 33422), (3932, 20740), (4148, 19660), (4880, 16711), (4915, 16592), (5185, 15728), (7864, 10370), (8296, 9830)]