28442620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{89}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 65847600

約数和(自身を除く): 37404980

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 89, 95, 116, 145, 178, 190, 290, 356, 380, 445, 551, 580, 841, 890, 1102, 1682, 1691, 1780, 2204, 2581, 2755, 3364, 3382, 4205, 5162, 5510, 6764, 8410, 8455, 10324, 11020, 12905, 15979, 16820, 16910, 25810, 31958, 33820, 49039, 51620, 63916, 74849, 79895, 98078, 149698, 159790, 196156, 245195, 299396, 319580, 374245, 490390, 748490, 980780, 1422131, 1496980, 2844262, 5688524, 7110655, 14221310, 28442620]

約数ペア:

[(1, 28442620), (2, 14221310), (4, 7110655), (5, 5688524), (10, 2844262), (19, 1496980), (20, 1422131), (29, 980780), (38, 748490), (58, 490390), (76, 374245), (89, 319580), (95, 299396), (116, 245195), (145, 196156), (178, 159790), (190, 149698), (290, 98078), (356, 79895), (380, 74849), (445, 63916), (551, 51620), (580, 49039), (841, 33820), (890, 31958), (1102, 25810), (1682, 16910), (1691, 16820), (1780, 15979), (2204, 12905), (2581, 11020), (2755, 10324), (3364, 8455), (3382, 8410), (4205, 6764), (5162, 5510)]