21851550

素因数分解:

$2^1\times 3^2\times 5^2\times 7^2\times {\mathrm{991}}^1$

素因数の和:1023

約数の個数: 108

約数和(自身を含む): 68361696

約数和(自身を除く): 46510146

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 49, 50, 63, 70, 75, 90, 98, 105, 126, 147, 150, 175, 210, 225, 245, 294, 315, 350, 441, 450, 490, 525, 630, 735, 882, 991, 1050, 1225, 1470, 1575, 1982, 2205, 2450, 2973, 3150, 3675, 4410, 4955, 5946, 6937, 7350, 8919, 9910, 11025, 13874, 14865, 17838, 20811, 22050, 24775, 29730, 34685, 41622, 44595, 48559, 49550, 62433, 69370, 74325, 89190, 97118, 104055, 124866, 145677, 148650, 173425, 208110, 222975, 242795, 291354, 312165, 346850, 437031, 445950, 485590, 520275, 624330, 728385, 874062, 1040550, 1213975, 1456770, 1560825, 2185155, 2427950, 3121650, 3641925, 4370310, 7283850, 10925775, 21851550]

約数ペア:

[(1, 21851550), (2, 10925775), (3, 7283850), (5, 4370310), (6, 3641925), (7, 3121650), (9, 2427950), (10, 2185155), (14, 1560825), (15, 1456770), (18, 1213975), (21, 1040550), (25, 874062), (30, 728385), (35, 624330), (42, 520275), (45, 485590), (49, 445950), (50, 437031), (63, 346850), (70, 312165), (75, 291354), (90, 242795), (98, 222975), (105, 208110), (126, 173425), (147, 148650), (150, 145677), (175, 124866), (210, 104055), (225, 97118), (245, 89190), (294, 74325), (315, 69370), (350, 62433), (441, 49550), (450, 48559), (490, 44595), (525, 41622), (630, 34685), (735, 29730), (882, 24775), (991, 22050), (1050, 20811), (1225, 17838), (1470, 14865), (1575, 13874), (1982, 11025), (2205, 9910), (2450, 8919), (2973, 7350), (3150, 6937), (3675, 5946), (4410, 4955)]