28396720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 120

約数和(自身を含む): 76526352

約数和(自身を除く): 48129632

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 61, 80, 88, 92, 110, 115, 122, 176, 184, 220, 230, 244, 253, 305, 368, 440, 460, 488, 506, 529, 610, 671, 880, 920, 976, 1012, 1058, 1220, 1265, 1342, 1403, 1840, 2024, 2116, 2440, 2530, 2645, 2684, 2806, 3355, 4048, 4232, 4880, 5060, 5290, 5368, 5612, 5819, 6710, 7015, 8464, 10120, 10580, 10736, 11224, 11638, 13420, 14030, 15433, 20240, 21160, 22448, 23276, 26840, 28060, 29095, 30866, 32269, 42320, 46552, 53680, 56120, 58190, 61732, 64538, 77165, 93104, 112240, 116380, 123464, 129076, 154330, 161345, 232760, 246928, 258152, 308660, 322690, 354959, 465520, 516304, 617320, 645380, 709918, 1234640, 1290760, 1419836, 1774795, 2581520, 2839672, 3549590, 5679344, 7099180, 14198360, 28396720]

約数ペア:

[(1, 28396720), (2, 14198360), (4, 7099180), (5, 5679344), (8, 3549590), (10, 2839672), (11, 2581520), (16, 1774795), (20, 1419836), (22, 1290760), (23, 1234640), (40, 709918), (44, 645380), (46, 617320), (55, 516304), (61, 465520), (80, 354959), (88, 322690), (92, 308660), (110, 258152), (115, 246928), (122, 232760), (176, 161345), (184, 154330), (220, 129076), (230, 123464), (244, 116380), (253, 112240), (305, 93104), (368, 77165), (440, 64538), (460, 61732), (488, 58190), (506, 56120), (529, 53680), (610, 46552), (671, 42320), (880, 32269), (920, 30866), (976, 29095), (1012, 28060), (1058, 26840), (1220, 23276), (1265, 22448), (1342, 21160), (1403, 20240), (1840, 15433), (2024, 14030), (2116, 13420), (2440, 11638), (2530, 11224), (2645, 10736), (2684, 10580), (2806, 10120), (3355, 8464), (4048, 7015), (4232, 6710), (4880, 5819), (5060, 5612), (5290, 5368)]