199902640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{356969}}^1$

素因数の和:356989

約数の個数: 40

約数和(自身を含む): 531171360

約数和(自身を除く): 331268720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 356969, 713938, 1427876, 1784845, 2498783, 2855752, 3569690, 4997566, 5711504, 7139380, 9995132, 12493915, 14278760, 19990264, 24987830, 28557520, 39980528, 49975660, 99951320, 199902640]

約数ペア:

[(1, 199902640), (2, 99951320), (4, 49975660), (5, 39980528), (7, 28557520), (8, 24987830), (10, 19990264), (14, 14278760), (16, 12493915), (20, 9995132), (28, 7139380), (35, 5711504), (40, 4997566), (56, 3569690), (70, 2855752), (80, 2498783), (112, 1784845), (140, 1427876), (280, 713938), (560, 356969)]