218793580

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 483625296

約数和(自身を除く): 264831716

約数列:

[1, 2, 4, 5, 10, 20, 37, 61, 74, 122, 131, 148, 185, 244, 262, 305, 370, 524, 610, 655, 740, 1220, 1310, 1369, 2257, 2620, 2738, 4514, 4847, 5476, 6845, 7991, 9028, 9694, 11285, 13690, 15982, 19388, 22570, 24235, 27380, 31964, 39955, 45140, 48470, 79910, 83509, 96940, 159820, 167018, 179339, 295667, 334036, 358678, 417545, 591334, 717356, 835090, 896695, 1182668, 1478335, 1670180, 1793390, 2956670, 3586780, 5913340, 10939679, 21879358, 43758716, 54698395, 109396790, 218793580]

約数ペア:

[(1, 218793580), (2, 109396790), (4, 54698395), (5, 43758716), (10, 21879358), (20, 10939679), (37, 5913340), (61, 3586780), (74, 2956670), (122, 1793390), (131, 1670180), (148, 1478335), (185, 1182668), (244, 896695), (262, 835090), (305, 717356), (370, 591334), (524, 417545), (610, 358678), (655, 334036), (740, 295667), (1220, 179339), (1310, 167018), (1369, 159820), (2257, 96940), (2620, 83509), (2738, 79910), (4514, 48470), (4847, 45140), (5476, 39955), (6845, 31964), (7991, 27380), (9028, 24235), (9694, 22570), (11285, 19388), (13690, 15982)]