18215890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{577}}^1$

素因数の和:643

約数の個数: 64

約数和(自身を含む): 41948928

約数和(自身を除く): 23733038

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 41, 55, 70, 77, 82, 110, 154, 205, 287, 385, 410, 451, 574, 577, 770, 902, 1154, 1435, 2255, 2870, 2885, 3157, 4039, 4510, 5770, 6314, 6347, 8078, 12694, 15785, 20195, 23657, 31570, 31735, 40390, 44429, 47314, 63470, 88858, 118285, 165599, 222145, 236570, 260227, 331198, 444290, 520454, 827995, 1301135, 1655990, 1821589, 2602270, 3643178, 9107945, 18215890]

約数ペア:

[(1, 18215890), (2, 9107945), (5, 3643178), (7, 2602270), (10, 1821589), (11, 1655990), (14, 1301135), (22, 827995), (35, 520454), (41, 444290), (55, 331198), (70, 260227), (77, 236570), (82, 222145), (110, 165599), (154, 118285), (205, 88858), (287, 63470), (385, 47314), (410, 44429), (451, 40390), (574, 31735), (577, 31570), (770, 23657), (902, 20195), (1154, 15785), (1435, 12694), (2255, 8078), (2870, 6347), (2885, 6314), (3157, 5770), (4039, 4510)]