1220004880

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:269

約数の個数: 120

約数和(自身を含む): 2971450440

約数和(自身を除く): 1751445560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 61, 80, 89, 106, 122, 178, 212, 244, 265, 305, 356, 424, 445, 488, 530, 610, 712, 848, 890, 976, 1060, 1220, 1424, 1780, 2120, 2440, 2809, 3233, 3560, 4240, 4717, 4880, 5429, 5618, 6466, 7120, 9434, 10858, 11236, 12932, 14045, 16165, 18868, 21716, 22472, 23585, 25864, 27145, 28090, 32330, 37736, 43432, 44944, 47170, 51728, 54290, 56180, 64660, 75472, 86864, 94340, 108580, 112360, 129320, 171349, 188680, 217160, 224720, 250001, 258640, 287737, 342698, 377360, 434320, 500002, 575474, 685396, 856745, 1000004, 1150948, 1250005, 1370792, 1438685, 1713490, 2000008, 2301896, 2500010, 2741584, 2877370, 3426980, 4000016, 4603792, 5000020, 5754740, 6853960, 10000040, 11509480, 13707920, 15250061, 20000080, 23018960, 30500122, 61000244, 76250305, 122000488, 152500610, 244000976, 305001220, 610002440, 1220004880]

約数ペア:

[(1, 1220004880), (2, 610002440), (4, 305001220), (5, 244000976), (8, 152500610), (10, 122000488), (16, 76250305), (20, 61000244), (40, 30500122), (53, 23018960), (61, 20000080), (80, 15250061), (89, 13707920), (106, 11509480), (122, 10000040), (178, 6853960), (212, 5754740), (244, 5000020), (265, 4603792), (305, 4000016), (356, 3426980), (424, 2877370), (445, 2741584), (488, 2500010), (530, 2301896), (610, 2000008), (712, 1713490), (848, 1438685), (890, 1370792), (976, 1250005), (1060, 1150948), (1220, 1000004), (1424, 856745), (1780, 685396), (2120, 575474), (2440, 500002), (2809, 434320), (3233, 377360), (3560, 342698), (4240, 287737), (4717, 258640), (4880, 250001), (5429, 224720), (5618, 217160), (6466, 188680), (7120, 171349), (9434, 129320), (10858, 112360), (11236, 108580), (12932, 94340), (14045, 86864), (16165, 75472), (18868, 64660), (21716, 56180), (22472, 54290), (23585, 51728), (25864, 47170), (27145, 44944), (28090, 43432), (32330, 37736)]