2051280020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:465

約数の個数: 96

約数和(自身を含む): 4513017600

約数和(自身を除く): 2461737580

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 103, 149, 163, 164, 205, 206, 298, 326, 410, 412, 515, 596, 652, 745, 815, 820, 1030, 1490, 1630, 2060, 2980, 3260, 4223, 6109, 6683, 8446, 12218, 13366, 15347, 16789, 16892, 21115, 24287, 24436, 26732, 30545, 30694, 33415, 33578, 42230, 48574, 61090, 61388, 66830, 67156, 76735, 83945, 84460, 97148, 121435, 122180, 133660, 153470, 167890, 242870, 306940, 335780, 485740, 629227, 688349, 995767, 1258454, 1376698, 1991534, 2501561, 2516908, 2753396, 3146135, 3441745, 3983068, 4978835, 5003122, 6292270, 6883490, 9957670, 10006244, 12507805, 12584540, 13766980, 19915340, 25015610, 50031220, 102564001, 205128002, 410256004, 512820005, 1025640010, 2051280020]

約数ペア:

[(1, 2051280020), (2, 1025640010), (4, 512820005), (5, 410256004), (10, 205128002), (20, 102564001), (41, 50031220), (82, 25015610), (103, 19915340), (149, 13766980), (163, 12584540), (164, 12507805), (205, 10006244), (206, 9957670), (298, 6883490), (326, 6292270), (410, 5003122), (412, 4978835), (515, 3983068), (596, 3441745), (652, 3146135), (745, 2753396), (815, 2516908), (820, 2501561), (1030, 1991534), (1490, 1376698), (1630, 1258454), (2060, 995767), (2980, 688349), (3260, 629227), (4223, 485740), (6109, 335780), (6683, 306940), (8446, 242870), (12218, 167890), (13366, 153470), (15347, 133660), (16789, 122180), (16892, 121435), (21115, 97148), (24287, 84460), (24436, 83945), (26732, 76735), (30545, 67156), (30694, 66830), (33415, 61388), (33578, 61090), (42230, 48574)]