18704980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 48416256

約数和(自身を除く): 29711276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 37, 46, 70, 74, 92, 115, 140, 148, 157, 161, 185, 230, 259, 314, 322, 370, 460, 518, 628, 644, 740, 785, 805, 851, 1036, 1099, 1295, 1570, 1610, 1702, 2198, 2590, 3140, 3220, 3404, 3611, 4255, 4396, 5180, 5495, 5809, 5957, 7222, 8510, 10990, 11618, 11914, 14444, 17020, 18055, 21980, 23236, 23828, 25277, 29045, 29785, 36110, 40663, 50554, 58090, 59570, 72220, 81326, 101108, 116180, 119140, 126385, 133607, 162652, 203315, 252770, 267214, 406630, 505540, 534428, 668035, 813260, 935249, 1336070, 1870498, 2672140, 3740996, 4676245, 9352490, 18704980]

約数ペア:

[(1, 18704980), (2, 9352490), (4, 4676245), (5, 3740996), (7, 2672140), (10, 1870498), (14, 1336070), (20, 935249), (23, 813260), (28, 668035), (35, 534428), (37, 505540), (46, 406630), (70, 267214), (74, 252770), (92, 203315), (115, 162652), (140, 133607), (148, 126385), (157, 119140), (161, 116180), (185, 101108), (230, 81326), (259, 72220), (314, 59570), (322, 58090), (370, 50554), (460, 40663), (518, 36110), (628, 29785), (644, 29045), (740, 25277), (785, 23828), (805, 23236), (851, 21980), (1036, 18055), (1099, 17020), (1295, 14444), (1570, 11914), (1610, 11618), (1702, 10990), (2198, 8510), (2590, 7222), (3140, 5957), (3220, 5809), (3404, 5495), (3611, 5180), (4255, 4396)]