81854280

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3989}}^1$

素因数の和:4028

約数の個数: 128

約数和(自身を含む): 287280000

約数和(自身を除く): 205425720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1080, 1140, 1368, 1710, 2052, 2280, 2565, 3420, 3989, 4104, 5130, 6840, 7978, 10260, 11967, 15956, 19945, 20520, 23934, 31912, 35901, 39890, 47868, 59835, 71802, 75791, 79780, 95736, 107703, 119670, 143604, 151582, 159560, 179505, 215406, 227373, 239340, 287208, 303164, 359010, 378955, 430812, 454746, 478680, 538515, 606328, 682119, 718020, 757910, 861624, 909492, 1077030, 1136865, 1364238, 1436040, 1515820, 1818984, 2046357, 2154060, 2273730, 2728476, 3031640, 3410595, 4092714, 4308120, 4547460, 5456952, 6821190, 8185428, 9094920, 10231785, 13642380, 16370856, 20463570, 27284760, 40927140, 81854280]

約数ペア:

[(1, 81854280), (2, 40927140), (3, 27284760), (4, 20463570), (5, 16370856), (6, 13642380), (8, 10231785), (9, 9094920), (10, 8185428), (12, 6821190), (15, 5456952), (18, 4547460), (19, 4308120), (20, 4092714), (24, 3410595), (27, 3031640), (30, 2728476), (36, 2273730), (38, 2154060), (40, 2046357), (45, 1818984), (54, 1515820), (57, 1436040), (60, 1364238), (72, 1136865), (76, 1077030), (90, 909492), (95, 861624), (108, 757910), (114, 718020), (120, 682119), (135, 606328), (152, 538515), (171, 478680), (180, 454746), (190, 430812), (216, 378955), (228, 359010), (270, 303164), (285, 287208), (342, 239340), (360, 227373), (380, 215406), (456, 179505), (513, 159560), (540, 151582), (570, 143604), (684, 119670), (760, 107703), (855, 95736), (1026, 79780), (1080, 75791), (1140, 71802), (1368, 59835), (1710, 47868), (2052, 39890), (2280, 35901), (2565, 31912), (3420, 23934), (3989, 20520), (4104, 19945), (5130, 15956), (6840, 11967), (7978, 10260)]