90405840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{53813}}^1$

素因数の和:53836

約数の個数: 80

約数和(自身を含む): 320300928

約数和(自身を除く): 229895088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 53813, 107626, 161439, 215252, 269065, 322878, 376691, 430504, 538130, 645756, 753382, 807195, 861008, 1076260, 1130073, 1291512, 1506764, 1614390, 1883455, 2152520, 2260146, 2583024, 3013528, 3228780, 3766910, 4305040, 4520292, 5650365, 6027056, 6457560, 7533820, 9040584, 11300730, 12915120, 15067640, 18081168, 22601460, 30135280, 45202920, 90405840]

約数ペア:

[(1, 90405840), (2, 45202920), (3, 30135280), (4, 22601460), (5, 18081168), (6, 15067640), (7, 12915120), (8, 11300730), (10, 9040584), (12, 7533820), (14, 6457560), (15, 6027056), (16, 5650365), (20, 4520292), (21, 4305040), (24, 3766910), (28, 3228780), (30, 3013528), (35, 2583024), (40, 2260146), (42, 2152520), (48, 1883455), (56, 1614390), (60, 1506764), (70, 1291512), (80, 1130073), (84, 1076260), (105, 861008), (112, 807195), (120, 753382), (140, 645756), (168, 538130), (210, 430504), (240, 376691), (280, 322878), (336, 269065), (420, 215252), (560, 161439), (840, 107626), (1680, 53813)]