19680164

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 42900480

約数和(自身を除く): 23220316

約数列:

[1, 2, 4, 7, 14, 28, 31, 41, 49, 62, 79, 82, 98, 124, 158, 164, 196, 217, 287, 316, 434, 553, 574, 868, 1106, 1148, 1271, 1519, 2009, 2212, 2449, 2542, 3038, 3239, 3871, 4018, 4898, 5084, 6076, 6478, 7742, 8036, 8897, 9796, 12956, 15484, 17143, 17794, 22673, 34286, 35588, 45346, 62279, 68572, 90692, 100409, 120001, 124558, 158711, 200818, 240002, 249116, 317422, 401636, 480004, 634844, 702863, 1405726, 2811452, 4920041, 9840082, 19680164]

約数ペア:

[(1, 19680164), (2, 9840082), (4, 4920041), (7, 2811452), (14, 1405726), (28, 702863), (31, 634844), (41, 480004), (49, 401636), (62, 317422), (79, 249116), (82, 240002), (98, 200818), (124, 158711), (158, 124558), (164, 120001), (196, 100409), (217, 90692), (287, 68572), (316, 62279), (434, 45346), (553, 35588), (574, 34286), (868, 22673), (1106, 17794), (1148, 17143), (1271, 15484), (1519, 12956), (2009, 9796), (2212, 8897), (2449, 8036), (2542, 7742), (3038, 6478), (3239, 6076), (3871, 5084), (4018, 4898)]