21661900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{877}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 53347280

約数和(自身を除く): 31685380

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 877, 950, 988, 1235, 1300, 1754, 1900, 2470, 3508, 4385, 4940, 6175, 8770, 11401, 12350, 16663, 17540, 21925, 22802, 24700, 33326, 43850, 45604, 57005, 66652, 83315, 87700, 114010, 166630, 216619, 228020, 285025, 333260, 416575, 433238, 570050, 833150, 866476, 1083095, 1140100, 1666300, 2166190, 4332380, 5415475, 10830950, 21661900]

約数ペア:

[(1, 21661900), (2, 10830950), (4, 5415475), (5, 4332380), (10, 2166190), (13, 1666300), (19, 1140100), (20, 1083095), (25, 866476), (26, 833150), (38, 570050), (50, 433238), (52, 416575), (65, 333260), (76, 285025), (95, 228020), (100, 216619), (130, 166630), (190, 114010), (247, 87700), (260, 83315), (325, 66652), (380, 57005), (475, 45604), (494, 43850), (650, 33326), (877, 24700), (950, 22802), (988, 21925), (1235, 17540), (1300, 16663), (1754, 12350), (1900, 11401), (2470, 8770), (3508, 6175), (4385, 4940)]