138280940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{947}}^1$

素因数の和:1119

約数の個数: 72

約数和(自身を含む): 340426800

約数和(自身を除く): 202145860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 196, 245, 298, 490, 596, 745, 947, 980, 1043, 1490, 1894, 2086, 2980, 3788, 4172, 4735, 5215, 6629, 7301, 9470, 10430, 13258, 14602, 18940, 20860, 26516, 29204, 33145, 36505, 46403, 66290, 73010, 92806, 132580, 141103, 146020, 185612, 232015, 282206, 464030, 564412, 705515, 928060, 987721, 1411030, 1975442, 2822060, 3950884, 4938605, 6914047, 9877210, 13828094, 19754420, 27656188, 34570235, 69140470, 138280940]

約数ペア:

[(1, 138280940), (2, 69140470), (4, 34570235), (5, 27656188), (7, 19754420), (10, 13828094), (14, 9877210), (20, 6914047), (28, 4938605), (35, 3950884), (49, 2822060), (70, 1975442), (98, 1411030), (140, 987721), (149, 928060), (196, 705515), (245, 564412), (298, 464030), (490, 282206), (596, 232015), (745, 185612), (947, 146020), (980, 141103), (1043, 132580), (1490, 92806), (1894, 73010), (2086, 66290), (2980, 46403), (3788, 36505), (4172, 33145), (4735, 29204), (5215, 26516), (6629, 20860), (7301, 18940), (9470, 14602), (10430, 13258)]