20630540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 32591860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 43, 46, 70, 86, 92, 115, 140, 149, 161, 172, 215, 230, 298, 301, 322, 430, 460, 596, 602, 644, 745, 805, 860, 989, 1043, 1204, 1490, 1505, 1610, 1978, 2086, 2980, 3010, 3220, 3427, 3956, 4172, 4945, 5215, 6020, 6407, 6854, 6923, 9890, 10430, 12814, 13708, 13846, 17135, 19780, 20860, 23989, 25628, 27692, 32035, 34270, 34615, 44849, 47978, 64070, 68540, 69230, 89698, 95956, 119945, 128140, 138460, 147361, 179396, 224245, 239890, 294722, 448490, 479780, 589444, 736805, 896980, 1031527, 1473610, 2063054, 2947220, 4126108, 5157635, 10315270, 20630540]

約数ペア:

[(1, 20630540), (2, 10315270), (4, 5157635), (5, 4126108), (7, 2947220), (10, 2063054), (14, 1473610), (20, 1031527), (23, 896980), (28, 736805), (35, 589444), (43, 479780), (46, 448490), (70, 294722), (86, 239890), (92, 224245), (115, 179396), (140, 147361), (149, 138460), (161, 128140), (172, 119945), (215, 95956), (230, 89698), (298, 69230), (301, 68540), (322, 64070), (430, 47978), (460, 44849), (596, 34615), (602, 34270), (644, 32035), (745, 27692), (805, 25628), (860, 23989), (989, 20860), (1043, 19780), (1204, 17135), (1490, 13846), (1505, 13708), (1610, 12814), (1978, 10430), (2086, 9890), (2980, 6923), (3010, 6854), (3220, 6407), (3427, 6020), (3956, 5215), (4172, 4945)]