20390916

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:361

約数の個数: 96

約数和(自身を含む): 59609088

約数和(自身を除く): 39218172

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 71, 78, 84, 91, 142, 156, 182, 213, 263, 273, 284, 364, 426, 497, 526, 546, 789, 852, 923, 994, 1052, 1092, 1491, 1578, 1841, 1846, 1988, 2769, 2982, 3156, 3419, 3682, 3692, 5523, 5538, 5964, 6461, 6838, 7364, 10257, 11046, 11076, 12922, 13676, 18673, 19383, 20514, 22092, 23933, 25844, 37346, 38766, 41028, 47866, 56019, 71799, 74692, 77532, 95732, 112038, 130711, 143598, 224076, 242749, 261422, 287196, 392133, 485498, 522844, 728247, 784266, 970996, 1456494, 1568532, 1699243, 2912988, 3398486, 5097729, 6796972, 10195458, 20390916]

約数ペア:

[(1, 20390916), (2, 10195458), (3, 6796972), (4, 5097729), (6, 3398486), (7, 2912988), (12, 1699243), (13, 1568532), (14, 1456494), (21, 970996), (26, 784266), (28, 728247), (39, 522844), (42, 485498), (52, 392133), (71, 287196), (78, 261422), (84, 242749), (91, 224076), (142, 143598), (156, 130711), (182, 112038), (213, 95732), (263, 77532), (273, 74692), (284, 71799), (364, 56019), (426, 47866), (497, 41028), (526, 38766), (546, 37346), (789, 25844), (852, 23933), (923, 22092), (994, 20514), (1052, 19383), (1092, 18673), (1491, 13676), (1578, 12922), (1841, 11076), (1846, 11046), (1988, 10257), (2769, 7364), (2982, 6838), (3156, 6461), (3419, 5964), (3682, 5538), (3692, 5523)]