199078900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:625

約数の個数: 72

約数和(自身を含む): 449971200

約数和(自身を除く): 250892300

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 149, 155, 298, 310, 431, 596, 620, 745, 775, 862, 1490, 1550, 1724, 2155, 2980, 3100, 3725, 4310, 4619, 7450, 8620, 9238, 10775, 13361, 14900, 18476, 21550, 23095, 26722, 43100, 46190, 53444, 64219, 66805, 92380, 115475, 128438, 133610, 230950, 256876, 267220, 321095, 334025, 461900, 642190, 668050, 1284380, 1336100, 1605475, 1990789, 3210950, 3981578, 6421900, 7963156, 9953945, 19907890, 39815780, 49769725, 99539450, 199078900]

約数ペア:

[(1, 199078900), (2, 99539450), (4, 49769725), (5, 39815780), (10, 19907890), (20, 9953945), (25, 7963156), (31, 6421900), (50, 3981578), (62, 3210950), (100, 1990789), (124, 1605475), (149, 1336100), (155, 1284380), (298, 668050), (310, 642190), (431, 461900), (596, 334025), (620, 321095), (745, 267220), (775, 256876), (862, 230950), (1490, 133610), (1550, 128438), (1724, 115475), (2155, 92380), (2980, 66805), (3100, 64219), (3725, 53444), (4310, 46190), (4619, 43100), (7450, 26722), (8620, 23095), (9238, 21550), (10775, 18476), (13361, 14900)]