21280950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 108

約数和(自身を含む): 60803028

約数和(自身を除く): 39522078

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 25, 30, 38, 45, 50, 57, 75, 90, 95, 114, 131, 150, 171, 190, 225, 262, 285, 342, 361, 393, 450, 475, 570, 655, 722, 786, 855, 950, 1083, 1179, 1310, 1425, 1710, 1805, 1965, 2166, 2358, 2489, 2850, 3249, 3275, 3610, 3930, 4275, 4978, 5415, 5895, 6498, 6550, 7467, 8550, 9025, 9825, 10830, 11790, 12445, 14934, 16245, 18050, 19650, 22401, 24890, 27075, 29475, 32490, 37335, 44802, 47291, 54150, 58950, 62225, 74670, 81225, 94582, 112005, 124450, 141873, 162450, 186675, 224010, 236455, 283746, 373350, 425619, 472910, 560025, 709365, 851238, 1120050, 1182275, 1418730, 2128095, 2364550, 3546825, 4256190, 7093650, 10640475, 21280950]

約数ペア:

[(1, 21280950), (2, 10640475), (3, 7093650), (5, 4256190), (6, 3546825), (9, 2364550), (10, 2128095), (15, 1418730), (18, 1182275), (19, 1120050), (25, 851238), (30, 709365), (38, 560025), (45, 472910), (50, 425619), (57, 373350), (75, 283746), (90, 236455), (95, 224010), (114, 186675), (131, 162450), (150, 141873), (171, 124450), (190, 112005), (225, 94582), (262, 81225), (285, 74670), (342, 62225), (361, 58950), (393, 54150), (450, 47291), (475, 44802), (570, 37335), (655, 32490), (722, 29475), (786, 27075), (855, 24890), (950, 22401), (1083, 19650), (1179, 18050), (1310, 16245), (1425, 14934), (1710, 12445), (1805, 11790), (1965, 10830), (2166, 9825), (2358, 9025), (2489, 8550), (2850, 7467), (3249, 6550), (3275, 6498), (3610, 5895), (3930, 5415), (4275, 4978)]