21202380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1931}}^1$

素因数の和:2007

約数の個数: 72

約数和(自身を含む): 65402064

約数和(自身を除く): 44199684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 1931, 2196, 2745, 3660, 3862, 5490, 5793, 7724, 9655, 10980, 11586, 17379, 19310, 23172, 28965, 34758, 38620, 57930, 69516, 86895, 115860, 117791, 173790, 235582, 347580, 353373, 471164, 588955, 706746, 1060119, 1177910, 1413492, 1766865, 2120238, 2355820, 3533730, 4240476, 5300595, 7067460, 10601190, 21202380]

約数ペア:

[(1, 21202380), (2, 10601190), (3, 7067460), (4, 5300595), (5, 4240476), (6, 3533730), (9, 2355820), (10, 2120238), (12, 1766865), (15, 1413492), (18, 1177910), (20, 1060119), (30, 706746), (36, 588955), (45, 471164), (60, 353373), (61, 347580), (90, 235582), (122, 173790), (180, 117791), (183, 115860), (244, 86895), (305, 69516), (366, 57930), (549, 38620), (610, 34758), (732, 28965), (915, 23172), (1098, 19310), (1220, 17379), (1830, 11586), (1931, 10980), (2196, 9655), (2745, 7724), (3660, 5793), (3862, 5490)]