20177900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 47330304

約数和(自身を除く): 27152404

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 31, 46, 50, 62, 92, 100, 115, 124, 155, 230, 283, 310, 460, 566, 575, 620, 713, 775, 1132, 1150, 1415, 1426, 1550, 2300, 2830, 2852, 3100, 3565, 5660, 6509, 7075, 7130, 8773, 13018, 14150, 14260, 17546, 17825, 26036, 28300, 32545, 35092, 35650, 43865, 65090, 71300, 87730, 130180, 162725, 175460, 201779, 219325, 325450, 403558, 438650, 650900, 807116, 877300, 1008895, 2017790, 4035580, 5044475, 10088950, 20177900]

約数ペア:

[(1, 20177900), (2, 10088950), (4, 5044475), (5, 4035580), (10, 2017790), (20, 1008895), (23, 877300), (25, 807116), (31, 650900), (46, 438650), (50, 403558), (62, 325450), (92, 219325), (100, 201779), (115, 175460), (124, 162725), (155, 130180), (230, 87730), (283, 71300), (310, 65090), (460, 43865), (566, 35650), (575, 35092), (620, 32545), (713, 28300), (775, 26036), (1132, 17825), (1150, 17546), (1415, 14260), (1426, 14150), (1550, 13018), (2300, 8773), (2830, 7130), (2852, 7075), (3100, 6509), (3565, 5660)]