20959900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{701}}^1$

素因数の和:751

約数の個数: 72

約数和(自身を含む): 51184224

約数和(自身を除く): 30224324

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 25, 26, 46, 50, 52, 65, 92, 100, 115, 130, 230, 260, 299, 325, 460, 575, 598, 650, 701, 1150, 1196, 1300, 1402, 1495, 2300, 2804, 2990, 3505, 5980, 7010, 7475, 9113, 14020, 14950, 16123, 17525, 18226, 29900, 32246, 35050, 36452, 45565, 64492, 70100, 80615, 91130, 161230, 182260, 209599, 227825, 322460, 403075, 419198, 455650, 806150, 838396, 911300, 1047995, 1612300, 2095990, 4191980, 5239975, 10479950, 20959900]

約数ペア:

[(1, 20959900), (2, 10479950), (4, 5239975), (5, 4191980), (10, 2095990), (13, 1612300), (20, 1047995), (23, 911300), (25, 838396), (26, 806150), (46, 455650), (50, 419198), (52, 403075), (65, 322460), (92, 227825), (100, 209599), (115, 182260), (130, 161230), (230, 91130), (260, 80615), (299, 70100), (325, 64492), (460, 45565), (575, 36452), (598, 35050), (650, 32246), (701, 29900), (1150, 18226), (1196, 17525), (1300, 16123), (1402, 14950), (1495, 14020), (2300, 9113), (2804, 7475), (2990, 7010), (3505, 5980)]