28223740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 66533040

約数和(自身を除く): 38309300

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 257, 289, 323, 340, 380, 514, 578, 646, 1028, 1156, 1285, 1292, 1445, 1615, 2570, 2890, 3230, 4369, 4883, 5140, 5491, 5780, 6460, 8738, 9766, 10982, 17476, 19532, 21845, 21964, 24415, 27455, 43690, 48830, 54910, 74273, 83011, 87380, 97660, 109820, 148546, 166022, 297092, 332044, 371365, 415055, 742730, 830110, 1411187, 1485460, 1660220, 2822374, 5644748, 7055935, 14111870, 28223740]

約数ペア:

[(1, 28223740), (2, 14111870), (4, 7055935), (5, 5644748), (10, 2822374), (17, 1660220), (19, 1485460), (20, 1411187), (34, 830110), (38, 742730), (68, 415055), (76, 371365), (85, 332044), (95, 297092), (170, 166022), (190, 148546), (257, 109820), (289, 97660), (323, 87380), (340, 83011), (380, 74273), (514, 54910), (578, 48830), (646, 43690), (1028, 27455), (1156, 24415), (1285, 21964), (1292, 21845), (1445, 19532), (1615, 17476), (2570, 10982), (2890, 9766), (3230, 8738), (4369, 6460), (4883, 5780), (5140, 5491)]