19902470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 22951930

約数列:

[1, 2, 5, 7, 10, 14, 35, 59, 61, 70, 79, 118, 122, 158, 295, 305, 395, 413, 427, 553, 590, 610, 790, 826, 854, 1106, 2065, 2135, 2765, 3599, 4130, 4270, 4661, 4819, 5530, 7198, 9322, 9638, 17995, 23305, 24095, 25193, 32627, 33733, 35990, 46610, 48190, 50386, 65254, 67466, 125965, 163135, 168665, 251930, 284321, 326270, 337330, 568642, 1421605, 1990247, 2843210, 3980494, 9951235, 19902470]

約数ペア:

[(1, 19902470), (2, 9951235), (5, 3980494), (7, 2843210), (10, 1990247), (14, 1421605), (35, 568642), (59, 337330), (61, 326270), (70, 284321), (79, 251930), (118, 168665), (122, 163135), (158, 125965), (295, 67466), (305, 65254), (395, 50386), (413, 48190), (427, 46610), (553, 35990), (590, 33733), (610, 32627), (790, 25193), (826, 24095), (854, 23305), (1106, 17995), (2065, 9638), (2135, 9322), (2765, 7198), (3599, 5530), (4130, 4819), (4270, 4661)]