21666330

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{17}}^3$

素因数の和:78

約数の個数: 144

約数和(自身を含む): 69624360

約数和(自身を除く): 47958030

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 30, 34, 35, 42, 45, 49, 51, 63, 70, 85, 90, 98, 102, 105, 119, 126, 147, 153, 170, 210, 238, 245, 255, 289, 294, 306, 315, 357, 441, 490, 510, 578, 595, 630, 714, 735, 765, 833, 867, 882, 1071, 1190, 1445, 1470, 1530, 1666, 1734, 1785, 2023, 2142, 2205, 2499, 2601, 2890, 3570, 4046, 4165, 4335, 4410, 4913, 4998, 5202, 5355, 6069, 7497, 8330, 8670, 9826, 10115, 10710, 12138, 12495, 13005, 14161, 14739, 14994, 18207, 20230, 24565, 24990, 26010, 28322, 29478, 30345, 34391, 36414, 37485, 42483, 44217, 49130, 60690, 68782, 70805, 73695, 74970, 84966, 88434, 91035, 103173, 127449, 141610, 147390, 171955, 182070, 206346, 212415, 221085, 240737, 254898, 309519, 343910, 424830, 442170, 481474, 515865, 619038, 637245, 722211, 1031730, 1203685, 1274490, 1444422, 1547595, 2166633, 2407370, 3095190, 3611055, 4333266, 7222110, 10833165, 21666330]

約数ペア:

[(1, 21666330), (2, 10833165), (3, 7222110), (5, 4333266), (6, 3611055), (7, 3095190), (9, 2407370), (10, 2166633), (14, 1547595), (15, 1444422), (17, 1274490), (18, 1203685), (21, 1031730), (30, 722211), (34, 637245), (35, 619038), (42, 515865), (45, 481474), (49, 442170), (51, 424830), (63, 343910), (70, 309519), (85, 254898), (90, 240737), (98, 221085), (102, 212415), (105, 206346), (119, 182070), (126, 171955), (147, 147390), (153, 141610), (170, 127449), (210, 103173), (238, 91035), (245, 88434), (255, 84966), (289, 74970), (294, 73695), (306, 70805), (315, 68782), (357, 60690), (441, 49130), (490, 44217), (510, 42483), (578, 37485), (595, 36414), (630, 34391), (714, 30345), (735, 29478), (765, 28322), (833, 26010), (867, 24990), (882, 24565), (1071, 20230), (1190, 18207), (1445, 14994), (1470, 14739), (1530, 14161), (1666, 13005), (1734, 12495), (1785, 12138), (2023, 10710), (2142, 10115), (2205, 9826), (2499, 8670), (2601, 8330), (2890, 7497), (3570, 6069), (4046, 5355), (4165, 5202), (4335, 4998), (4410, 4913)]