21937055

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 33981120

約数和(自身を除く): 12044065

約数列:

[1, 5, 7, 17, 23, 35, 49, 85, 115, 119, 161, 229, 245, 391, 595, 805, 833, 1127, 1145, 1603, 1955, 2737, 3893, 4165, 5267, 5635, 8015, 11221, 13685, 19159, 19465, 26335, 27251, 36869, 56105, 89539, 95795, 136255, 184345, 190757, 258083, 447695, 626773, 953785, 1290415, 3133865, 4387411, 21937055]

約数ペア:

[(1, 21937055), (5, 4387411), (7, 3133865), (17, 1290415), (23, 953785), (35, 626773), (49, 447695), (85, 258083), (115, 190757), (119, 184345), (161, 136255), (229, 95795), (245, 89539), (391, 56105), (595, 36869), (805, 27251), (833, 26335), (1127, 19465), (1145, 19159), (1603, 13685), (1955, 11221), (2737, 8015), (3893, 5635), (4165, 5267)]