19693990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 40186368

約数和(自身を除く): 20492378

約数列:

[1, 2, 5, 10, 17, 31, 34, 37, 62, 74, 85, 101, 155, 170, 185, 202, 310, 370, 505, 527, 629, 1010, 1054, 1147, 1258, 1717, 2294, 2635, 3131, 3145, 3434, 3737, 5270, 5735, 6262, 6290, 7474, 8585, 11470, 15655, 17170, 18685, 19499, 31310, 37370, 38998, 53227, 63529, 97495, 106454, 115847, 127058, 194990, 231694, 266135, 317645, 532270, 579235, 635290, 1158470, 1969399, 3938798, 9846995, 19693990]

約数ペア:

[(1, 19693990), (2, 9846995), (5, 3938798), (10, 1969399), (17, 1158470), (31, 635290), (34, 579235), (37, 532270), (62, 317645), (74, 266135), (85, 231694), (101, 194990), (155, 127058), (170, 115847), (185, 106454), (202, 97495), (310, 63529), (370, 53227), (505, 38998), (527, 37370), (629, 31310), (1010, 19499), (1054, 18685), (1147, 17170), (1258, 15655), (1717, 11470), (2294, 8585), (2635, 7474), (3131, 6290), (3145, 6262), (3434, 5735), (3737, 5270)]