21090456

素因数分解:

$2^3\times 3^5\times {\mathrm{19}}^1\times {\mathrm{571}}^1$

素因数の和:611

約数の個数: 96

約数和(自身を含む): 62462400

約数和(自身を除く): 41371944

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 27, 36, 38, 54, 57, 72, 76, 81, 108, 114, 152, 162, 171, 216, 228, 243, 324, 342, 456, 486, 513, 571, 648, 684, 972, 1026, 1142, 1368, 1539, 1713, 1944, 2052, 2284, 3078, 3426, 4104, 4568, 4617, 5139, 6156, 6852, 9234, 10278, 10849, 12312, 13704, 15417, 18468, 20556, 21698, 30834, 32547, 36936, 41112, 43396, 46251, 61668, 65094, 86792, 92502, 97641, 123336, 130188, 138753, 185004, 195282, 260376, 277506, 292923, 370008, 390564, 555012, 585846, 781128, 878769, 1110024, 1171692, 1757538, 2343384, 2636307, 3515076, 5272614, 7030152, 10545228, 21090456]

約数ペア:

[(1, 21090456), (2, 10545228), (3, 7030152), (4, 5272614), (6, 3515076), (8, 2636307), (9, 2343384), (12, 1757538), (18, 1171692), (19, 1110024), (24, 878769), (27, 781128), (36, 585846), (38, 555012), (54, 390564), (57, 370008), (72, 292923), (76, 277506), (81, 260376), (108, 195282), (114, 185004), (152, 138753), (162, 130188), (171, 123336), (216, 97641), (228, 92502), (243, 86792), (324, 65094), (342, 61668), (456, 46251), (486, 43396), (513, 41112), (571, 36936), (648, 32547), (684, 30834), (972, 21698), (1026, 20556), (1142, 18468), (1368, 15417), (1539, 13704), (1713, 12312), (1944, 10849), (2052, 10278), (2284, 9234), (3078, 6852), (3426, 6156), (4104, 5139), (4568, 4617)]