20118353944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1\times {\mathrm{2309}}^1$

素因数の和:2948

約数の個数: 64

約数和(自身を含む): 40942440000

約数和(自身を除く): 20824086056

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 199, 398, 421, 796, 842, 1592, 1684, 2309, 2587, 3368, 4618, 5174, 5473, 9236, 10348, 10946, 18472, 20696, 21892, 30017, 43784, 60034, 83779, 120068, 167558, 240136, 335116, 459491, 670232, 918982, 972089, 1089127, 1837964, 1944178, 2178254, 3675928, 3888356, 4356508, 5973383, 7776712, 8713016, 11946766, 12637157, 23893532, 25274314, 47787064, 50548628, 101097256, 193445711, 386891422, 773782844, 1547565688, 2514794243, 5029588486, 10059176972, 20118353944]

約数ペア:

[(1, 20118353944), (2, 10059176972), (4, 5029588486), (8, 2514794243), (13, 1547565688), (26, 773782844), (52, 386891422), (104, 193445711), (199, 101097256), (398, 50548628), (421, 47787064), (796, 25274314), (842, 23893532), (1592, 12637157), (1684, 11946766), (2309, 8713016), (2587, 7776712), (3368, 5973383), (4618, 4356508), (5174, 3888356), (5473, 3675928), (9236, 2178254), (10348, 1944178), (10946, 1837964), (18472, 1089127), (20696, 972089), (21892, 918982), (30017, 670232), (43784, 459491), (60034, 335116), (83779, 240136), (120068, 167558)]