256248800

素因数分解:

$2^5\times 5^2\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:229

約数の個数: 144

約数和(自身を含む): 653864400

約数和(自身を除く): 397615600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 59, 61, 80, 89, 100, 118, 122, 160, 178, 200, 236, 244, 295, 305, 356, 400, 445, 472, 488, 590, 610, 712, 800, 890, 944, 976, 1180, 1220, 1424, 1475, 1525, 1780, 1888, 1952, 2225, 2360, 2440, 2848, 2950, 3050, 3560, 3599, 4450, 4720, 4880, 5251, 5429, 5900, 6100, 7120, 7198, 8900, 9440, 9760, 10502, 10858, 11800, 12200, 14240, 14396, 17800, 17995, 21004, 21716, 23600, 24400, 26255, 27145, 28792, 35600, 35990, 42008, 43432, 47200, 48800, 52510, 54290, 57584, 71200, 71980, 84016, 86864, 89975, 105020, 108580, 115168, 131275, 135725, 143960, 168032, 173728, 179950, 210040, 217160, 262550, 271450, 287920, 320311, 359900, 420080, 434320, 525100, 542900, 575840, 640622, 719800, 840160, 868640, 1050200, 1085800, 1281244, 1439600, 1601555, 2100400, 2171600, 2562488, 2879200, 3203110, 4200800, 4343200, 5124976, 6406220, 8007775, 10249952, 12812440, 16015550, 25624880, 32031100, 51249760, 64062200, 128124400, 256248800]

約数ペア:

[(1, 256248800), (2, 128124400), (4, 64062200), (5, 51249760), (8, 32031100), (10, 25624880), (16, 16015550), (20, 12812440), (25, 10249952), (32, 8007775), (40, 6406220), (50, 5124976), (59, 4343200), (61, 4200800), (80, 3203110), (89, 2879200), (100, 2562488), (118, 2171600), (122, 2100400), (160, 1601555), (178, 1439600), (200, 1281244), (236, 1085800), (244, 1050200), (295, 868640), (305, 840160), (356, 719800), (400, 640622), (445, 575840), (472, 542900), (488, 525100), (590, 434320), (610, 420080), (712, 359900), (800, 320311), (890, 287920), (944, 271450), (976, 262550), (1180, 217160), (1220, 210040), (1424, 179950), (1475, 173728), (1525, 168032), (1780, 143960), (1888, 135725), (1952, 131275), (2225, 115168), (2360, 108580), (2440, 105020), (2848, 89975), (2950, 86864), (3050, 84016), (3560, 71980), (3599, 71200), (4450, 57584), (4720, 54290), (4880, 52510), (5251, 48800), (5429, 47200), (5900, 43432), (6100, 42008), (7120, 35990), (7198, 35600), (8900, 28792), (9440, 27145), (9760, 26255), (10502, 24400), (10858, 23600), (11800, 21716), (12200, 21004), (14240, 17995), (14396, 17800)]