21128887300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1\times {\mathrm{367}}^1$

素因数の和:750

約数の個数: 144

約数和(自身を含む): 48954922240

約数和(自身を除く): 27826034940

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 157, 190, 193, 314, 367, 380, 386, 475, 628, 734, 772, 785, 950, 965, 1468, 1570, 1835, 1900, 1930, 2983, 3140, 3667, 3670, 3860, 3925, 4825, 5966, 6973, 7334, 7340, 7850, 9175, 9650, 11932, 13946, 14668, 14915, 15700, 18335, 18350, 19300, 27892, 29830, 30301, 34865, 36670, 36700, 57619, 59660, 60602, 69730, 70831, 73340, 74575, 91675, 115238, 121204, 139460, 141662, 149150, 151505, 174325, 183350, 230476, 283324, 288095, 298300, 303010, 348650, 354155, 366700, 575719, 576190, 606020, 697300, 708310, 757525, 1094761, 1151438, 1152380, 1345789, 1416620, 1440475, 1515050, 1770775, 2189522, 2302876, 2691578, 2878595, 2880950, 3030100, 3541550, 4379044, 5383156, 5473805, 5757190, 5761900, 6728945, 7083100, 10947610, 11120467, 11514380, 13457890, 14392975, 21895220, 22240934, 26915780, 27369025, 28785950, 33644725, 44481868, 54738050, 55602335, 57571900, 67289450, 109476100, 111204670, 134578900, 211288873, 222409340, 278011675, 422577746, 556023350, 845155492, 1056444365, 1112046700, 2112888730, 4225777460, 5282221825, 10564443650, 21128887300]

約数ペア:

[(1, 21128887300), (2, 10564443650), (4, 5282221825), (5, 4225777460), (10, 2112888730), (19, 1112046700), (20, 1056444365), (25, 845155492), (38, 556023350), (50, 422577746), (76, 278011675), (95, 222409340), (100, 211288873), (157, 134578900), (190, 111204670), (193, 109476100), (314, 67289450), (367, 57571900), (380, 55602335), (386, 54738050), (475, 44481868), (628, 33644725), (734, 28785950), (772, 27369025), (785, 26915780), (950, 22240934), (965, 21895220), (1468, 14392975), (1570, 13457890), (1835, 11514380), (1900, 11120467), (1930, 10947610), (2983, 7083100), (3140, 6728945), (3667, 5761900), (3670, 5757190), (3860, 5473805), (3925, 5383156), (4825, 4379044), (5966, 3541550), (6973, 3030100), (7334, 2880950), (7340, 2878595), (7850, 2691578), (9175, 2302876), (9650, 2189522), (11932, 1770775), (13946, 1515050), (14668, 1440475), (14915, 1416620), (15700, 1345789), (18335, 1152380), (18350, 1151438), (19300, 1094761), (27892, 757525), (29830, 708310), (30301, 697300), (34865, 606020), (36670, 576190), (36700, 575719), (57619, 366700), (59660, 354155), (60602, 348650), (69730, 303010), (70831, 298300), (73340, 288095), (74575, 283324), (91675, 230476), (115238, 183350), (121204, 174325), (139460, 151505), (141662, 149150)]