18400360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:143

約数の個数: 128

約数和(自身を含む): 49766400

約数和(自身を除く): 31366040

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 31, 38, 40, 44, 55, 62, 71, 76, 88, 95, 110, 124, 142, 152, 155, 190, 209, 220, 248, 284, 310, 341, 355, 380, 418, 440, 568, 589, 620, 682, 710, 760, 781, 836, 1045, 1178, 1240, 1349, 1364, 1420, 1562, 1672, 1705, 2090, 2201, 2356, 2698, 2728, 2840, 2945, 3124, 3410, 3905, 4180, 4402, 4712, 5396, 5890, 6248, 6479, 6745, 6820, 7810, 8360, 8804, 10792, 11005, 11780, 12958, 13490, 13640, 14839, 15620, 17608, 22010, 23560, 24211, 25916, 26980, 29678, 31240, 32395, 41819, 44020, 48422, 51832, 53960, 59356, 64790, 74195, 83638, 88040, 96844, 118712, 121055, 129580, 148390, 167276, 193688, 209095, 242110, 259160, 296780, 334552, 418190, 460009, 484220, 593560, 836380, 920018, 968440, 1672760, 1840036, 2300045, 3680072, 4600090, 9200180, 18400360]

約数ペア:

[(1, 18400360), (2, 9200180), (4, 4600090), (5, 3680072), (8, 2300045), (10, 1840036), (11, 1672760), (19, 968440), (20, 920018), (22, 836380), (31, 593560), (38, 484220), (40, 460009), (44, 418190), (55, 334552), (62, 296780), (71, 259160), (76, 242110), (88, 209095), (95, 193688), (110, 167276), (124, 148390), (142, 129580), (152, 121055), (155, 118712), (190, 96844), (209, 88040), (220, 83638), (248, 74195), (284, 64790), (310, 59356), (341, 53960), (355, 51832), (380, 48422), (418, 44020), (440, 41819), (568, 32395), (589, 31240), (620, 29678), (682, 26980), (710, 25916), (760, 24211), (781, 23560), (836, 22010), (1045, 17608), (1178, 15620), (1240, 14839), (1349, 13640), (1364, 13490), (1420, 12958), (1562, 11780), (1672, 11005), (1705, 10792), (2090, 8804), (2201, 8360), (2356, 7810), (2698, 6820), (2728, 6745), (2840, 6479), (2945, 6248), (3124, 5890), (3410, 5396), (3905, 4712), (4180, 4402)]