21921960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 47751000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 71, 83, 93, 120, 124, 142, 155, 166, 186, 213, 248, 249, 284, 310, 332, 355, 372, 415, 426, 465, 498, 568, 620, 664, 710, 744, 830, 852, 930, 996, 1065, 1240, 1245, 1420, 1660, 1704, 1860, 1992, 2130, 2201, 2490, 2573, 2840, 3320, 3720, 4260, 4402, 4980, 5146, 5893, 6603, 7719, 8520, 8804, 9960, 10292, 11005, 11786, 12865, 13206, 15438, 17608, 17679, 20584, 22010, 23572, 25730, 26412, 29465, 30876, 33015, 35358, 38595, 44020, 47144, 51460, 52824, 58930, 61752, 66030, 70716, 77190, 88040, 88395, 102920, 117860, 132060, 141432, 154380, 176790, 182683, 235720, 264120, 308760, 353580, 365366, 548049, 707160, 730732, 913415, 1096098, 1461464, 1826830, 2192196, 2740245, 3653660, 4384392, 5480490, 7307320, 10960980, 21921960]

約数ペア:

[(1, 21921960), (2, 10960980), (3, 7307320), (4, 5480490), (5, 4384392), (6, 3653660), (8, 2740245), (10, 2192196), (12, 1826830), (15, 1461464), (20, 1096098), (24, 913415), (30, 730732), (31, 707160), (40, 548049), (60, 365366), (62, 353580), (71, 308760), (83, 264120), (93, 235720), (120, 182683), (124, 176790), (142, 154380), (155, 141432), (166, 132060), (186, 117860), (213, 102920), (248, 88395), (249, 88040), (284, 77190), (310, 70716), (332, 66030), (355, 61752), (372, 58930), (415, 52824), (426, 51460), (465, 47144), (498, 44020), (568, 38595), (620, 35358), (664, 33015), (710, 30876), (744, 29465), (830, 26412), (852, 25730), (930, 23572), (996, 22010), (1065, 20584), (1240, 17679), (1245, 17608), (1420, 15438), (1660, 13206), (1704, 12865), (1860, 11786), (1992, 11005), (2130, 10292), (2201, 9960), (2490, 8804), (2573, 8520), (2840, 7719), (3320, 6603), (3720, 5893), (4260, 5146), (4402, 4980)]