16819900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 38997504

約数和(自身を除く): 22177604

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 71, 92, 100, 103, 115, 142, 206, 230, 284, 355, 412, 460, 515, 575, 710, 1030, 1150, 1420, 1633, 1775, 2060, 2300, 2369, 2575, 3266, 3550, 4738, 5150, 6532, 7100, 7313, 8165, 9476, 10300, 11845, 14626, 16330, 23690, 29252, 32660, 36565, 40825, 47380, 59225, 73130, 81650, 118450, 146260, 163300, 168199, 182825, 236900, 336398, 365650, 672796, 731300, 840995, 1681990, 3363980, 4204975, 8409950, 16819900]

約数ペア:

[(1, 16819900), (2, 8409950), (4, 4204975), (5, 3363980), (10, 1681990), (20, 840995), (23, 731300), (25, 672796), (46, 365650), (50, 336398), (71, 236900), (92, 182825), (100, 168199), (103, 163300), (115, 146260), (142, 118450), (206, 81650), (230, 73130), (284, 59225), (355, 47380), (412, 40825), (460, 36565), (515, 32660), (575, 29252), (710, 23690), (1030, 16330), (1150, 14626), (1420, 11845), (1633, 10300), (1775, 9476), (2060, 8165), (2300, 7313), (2369, 7100), (2575, 6532), (3266, 5150), (3550, 4738)]