90417740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 222354720

約数和(自身を除く): 131936980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 257, 359, 490, 514, 718, 980, 1028, 1285, 1436, 1795, 1799, 2513, 2570, 3590, 3598, 5026, 5140, 7180, 7196, 8995, 10052, 12565, 12593, 17591, 17990, 25130, 25186, 35182, 35980, 50260, 50372, 62965, 70364, 87955, 92263, 125930, 175910, 184526, 251860, 351820, 369052, 461315, 645841, 922630, 1291682, 1845260, 2583364, 3229205, 4520887, 6458410, 9041774, 12916820, 18083548, 22604435, 45208870, 90417740]

約数ペア:

[(1, 90417740), (2, 45208870), (4, 22604435), (5, 18083548), (7, 12916820), (10, 9041774), (14, 6458410), (20, 4520887), (28, 3229205), (35, 2583364), (49, 1845260), (70, 1291682), (98, 922630), (140, 645841), (196, 461315), (245, 369052), (257, 351820), (359, 251860), (490, 184526), (514, 175910), (718, 125930), (980, 92263), (1028, 87955), (1285, 70364), (1436, 62965), (1795, 50372), (1799, 50260), (2513, 35980), (2570, 35182), (3590, 25186), (3598, 25130), (5026, 17990), (5140, 17591), (7180, 12593), (7196, 12565), (8995, 10052)]