18235980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{353}}^1$

素因数の和:416

約数の個数: 144

約数和(自身を含む): 64943424

約数和(自身を除く): 46707444

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 41, 42, 45, 60, 63, 70, 82, 84, 90, 105, 123, 126, 140, 164, 180, 205, 210, 246, 252, 287, 315, 353, 369, 410, 420, 492, 574, 615, 630, 706, 738, 820, 861, 1059, 1148, 1230, 1260, 1412, 1435, 1476, 1722, 1765, 1845, 2118, 2460, 2471, 2583, 2870, 3177, 3444, 3530, 3690, 4236, 4305, 4942, 5166, 5295, 5740, 6354, 7060, 7380, 7413, 8610, 9884, 10332, 10590, 12355, 12708, 12915, 14473, 14826, 15885, 17220, 21180, 22239, 24710, 25830, 28946, 29652, 31770, 37065, 43419, 44478, 49420, 51660, 57892, 63540, 72365, 74130, 86838, 88956, 101311, 111195, 130257, 144730, 148260, 173676, 202622, 217095, 222390, 260514, 289460, 303933, 405244, 434190, 444780, 506555, 521028, 607866, 651285, 868380, 911799, 1013110, 1215732, 1302570, 1519665, 1823598, 2026220, 2605140, 3039330, 3647196, 4558995, 6078660, 9117990, 18235980]

約数ペア:

[(1, 18235980), (2, 9117990), (3, 6078660), (4, 4558995), (5, 3647196), (6, 3039330), (7, 2605140), (9, 2026220), (10, 1823598), (12, 1519665), (14, 1302570), (15, 1215732), (18, 1013110), (20, 911799), (21, 868380), (28, 651285), (30, 607866), (35, 521028), (36, 506555), (41, 444780), (42, 434190), (45, 405244), (60, 303933), (63, 289460), (70, 260514), (82, 222390), (84, 217095), (90, 202622), (105, 173676), (123, 148260), (126, 144730), (140, 130257), (164, 111195), (180, 101311), (205, 88956), (210, 86838), (246, 74130), (252, 72365), (287, 63540), (315, 57892), (353, 51660), (369, 49420), (410, 44478), (420, 43419), (492, 37065), (574, 31770), (615, 29652), (630, 28946), (706, 25830), (738, 24710), (820, 22239), (861, 21180), (1059, 17220), (1148, 15885), (1230, 14826), (1260, 14473), (1412, 12915), (1435, 12708), (1476, 12355), (1722, 10590), (1765, 10332), (1845, 9884), (2118, 8610), (2460, 7413), (2471, 7380), (2583, 7060), (2870, 6354), (3177, 5740), (3444, 5295), (3530, 5166), (3690, 4942), (4236, 4305)]