25156640720

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{311}}^1\times {\mathrm{5081}}^1$

素因数の和:5604

約数の個数: 80

約数和(自身を含む): 58983724800

約数和(自身を除く): 33827084080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 311, 398, 622, 796, 995, 1244, 1555, 1592, 1990, 2488, 3110, 3184, 3980, 4976, 5081, 6220, 7960, 10162, 12440, 15920, 20324, 24880, 25405, 40648, 50810, 61889, 81296, 101620, 123778, 203240, 247556, 309445, 406480, 495112, 618890, 990224, 1011119, 1237780, 1580191, 2022238, 2475560, 3160382, 4044476, 4951120, 5055595, 6320764, 7900955, 8088952, 10111190, 12641528, 15801910, 16177904, 20222380, 25283056, 31603820, 40444760, 63207640, 80889520, 126415280, 314458009, 628916018, 1257832036, 1572290045, 2515664072, 3144580090, 5031328144, 6289160180, 12578320360, 25156640720]

約数ペア:

[(1, 25156640720), (2, 12578320360), (4, 6289160180), (5, 5031328144), (8, 3144580090), (10, 2515664072), (16, 1572290045), (20, 1257832036), (40, 628916018), (80, 314458009), (199, 126415280), (311, 80889520), (398, 63207640), (622, 40444760), (796, 31603820), (995, 25283056), (1244, 20222380), (1555, 16177904), (1592, 15801910), (1990, 12641528), (2488, 10111190), (3110, 8088952), (3184, 7900955), (3980, 6320764), (4976, 5055595), (5081, 4951120), (6220, 4044476), (7960, 3160382), (10162, 2475560), (12440, 2022238), (15920, 1580191), (20324, 1237780), (24880, 1011119), (25405, 990224), (40648, 618890), (50810, 495112), (61889, 406480), (81296, 309445), (101620, 247556), (123778, 203240)]