28991715

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 23263005

約数列:

[1, 3, 5, 15, 17, 41, 47, 51, 59, 85, 123, 141, 177, 205, 235, 255, 295, 615, 697, 705, 799, 885, 1003, 1927, 2091, 2397, 2419, 2773, 3009, 3485, 3995, 5015, 5781, 7257, 8319, 9635, 10455, 11985, 12095, 13865, 15045, 28905, 32759, 36285, 41123, 41595, 47141, 98277, 113693, 123369, 141423, 163795, 205615, 235705, 341079, 491385, 568465, 616845, 707115, 1705395, 1932781, 5798343, 9663905, 28991715]

約数ペア:

[(1, 28991715), (3, 9663905), (5, 5798343), (15, 1932781), (17, 1705395), (41, 707115), (47, 616845), (51, 568465), (59, 491385), (85, 341079), (123, 235705), (141, 205615), (177, 163795), (205, 141423), (235, 123369), (255, 113693), (295, 98277), (615, 47141), (697, 41595), (705, 41123), (799, 36285), (885, 32759), (1003, 28905), (1927, 15045), (2091, 13865), (2397, 12095), (2419, 11985), (2773, 10455), (3009, 9635), (3485, 8319), (3995, 7257), (5015, 5781)]