213865900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3631}}^1$

素因数の和:3695

約数の個数: 72

約数和(自身を含む): 504412160

約数和(自身を除く): 290546260

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 62, 76, 95, 100, 124, 155, 190, 310, 380, 475, 589, 620, 775, 950, 1178, 1550, 1900, 2356, 2945, 3100, 3631, 5890, 7262, 11780, 14524, 14725, 18155, 29450, 36310, 58900, 68989, 72620, 90775, 112561, 137978, 181550, 225122, 275956, 344945, 363100, 450244, 562805, 689890, 1125610, 1379780, 1724725, 2138659, 2251220, 2814025, 3449450, 4277318, 5628050, 6898900, 8554636, 10693295, 11256100, 21386590, 42773180, 53466475, 106932950, 213865900]

約数ペア:

[(1, 213865900), (2, 106932950), (4, 53466475), (5, 42773180), (10, 21386590), (19, 11256100), (20, 10693295), (25, 8554636), (31, 6898900), (38, 5628050), (50, 4277318), (62, 3449450), (76, 2814025), (95, 2251220), (100, 2138659), (124, 1724725), (155, 1379780), (190, 1125610), (310, 689890), (380, 562805), (475, 450244), (589, 363100), (620, 344945), (775, 275956), (950, 225122), (1178, 181550), (1550, 137978), (1900, 112561), (2356, 90775), (2945, 72620), (3100, 68989), (3631, 58900), (5890, 36310), (7262, 29450), (11780, 18155), (14524, 14725)]