20718232700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{3229}}^1$

素因数の和:3580

約数の個数: 144

約数和(自身を含む): 51811267200

約数和(自身を除く): 31093034500

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 307, 380, 418, 475, 550, 614, 836, 950, 1045, 1100, 1228, 1535, 1900, 2090, 3070, 3229, 3377, 4180, 5225, 5833, 6140, 6458, 6754, 7675, 10450, 11666, 12916, 13508, 15350, 16145, 16885, 20900, 23332, 29165, 30700, 32290, 33770, 35519, 58330, 61351, 64163, 64580, 67540, 71038, 80725, 84425, 116660, 122702, 128326, 142076, 145825, 161450, 168850, 177595, 245404, 256652, 291650, 306755, 320815, 322900, 337700, 355190, 583300, 613510, 641630, 674861, 710380, 887975, 991303, 1227020, 1283260, 1349722, 1533775, 1604075, 1775950, 1982606, 2699444, 3067550, 3208150, 3374305, 3551900, 3965212, 4956515, 6135100, 6416300, 6748610, 9913030, 10904333, 13497220, 16871525, 18834757, 19826060, 21808666, 24782575, 33743050, 37669514, 43617332, 49565150, 54521665, 67486100, 75339028, 94173785, 99130300, 109043330, 188347570, 207182327, 218086660, 272608325, 376695140, 414364654, 470868925, 545216650, 828729308, 941737850, 1035911635, 1090433300, 1883475700, 2071823270, 4143646540, 5179558175, 10359116350, 20718232700]

約数ペア:

[(1, 20718232700), (2, 10359116350), (4, 5179558175), (5, 4143646540), (10, 2071823270), (11, 1883475700), (19, 1090433300), (20, 1035911635), (22, 941737850), (25, 828729308), (38, 545216650), (44, 470868925), (50, 414364654), (55, 376695140), (76, 272608325), (95, 218086660), (100, 207182327), (110, 188347570), (190, 109043330), (209, 99130300), (220, 94173785), (275, 75339028), (307, 67486100), (380, 54521665), (418, 49565150), (475, 43617332), (550, 37669514), (614, 33743050), (836, 24782575), (950, 21808666), (1045, 19826060), (1100, 18834757), (1228, 16871525), (1535, 13497220), (1900, 10904333), (2090, 9913030), (3070, 6748610), (3229, 6416300), (3377, 6135100), (4180, 4956515), (5225, 3965212), (5833, 3551900), (6140, 3374305), (6458, 3208150), (6754, 3067550), (7675, 2699444), (10450, 1982606), (11666, 1775950), (12916, 1604075), (13508, 1533775), (15350, 1349722), (16145, 1283260), (16885, 1227020), (20900, 991303), (23332, 887975), (29165, 710380), (30700, 674861), (32290, 641630), (33770, 613510), (35519, 583300), (58330, 355190), (61351, 337700), (64163, 322900), (64580, 320815), (67540, 306755), (71038, 291650), (80725, 256652), (84425, 245404), (116660, 177595), (122702, 168850), (128326, 161450), (142076, 145825)]