19426980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^2$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 56230272

約数和(自身を除く): 36803292

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 83, 94, 141, 166, 188, 235, 249, 282, 332, 415, 470, 498, 564, 705, 830, 940, 996, 1245, 1410, 1660, 2490, 2820, 3901, 4980, 6889, 7802, 11703, 13778, 15604, 19505, 20667, 23406, 27556, 34445, 39010, 41334, 46812, 58515, 68890, 78020, 82668, 103335, 117030, 137780, 206670, 234060, 323783, 413340, 647566, 971349, 1295132, 1618915, 1942698, 3237830, 3885396, 4856745, 6475660, 9713490, 19426980]

約数ペア:

[(1, 19426980), (2, 9713490), (3, 6475660), (4, 4856745), (5, 3885396), (6, 3237830), (10, 1942698), (12, 1618915), (15, 1295132), (20, 971349), (30, 647566), (47, 413340), (60, 323783), (83, 234060), (94, 206670), (141, 137780), (166, 117030), (188, 103335), (235, 82668), (249, 78020), (282, 68890), (332, 58515), (415, 46812), (470, 41334), (498, 39010), (564, 34445), (705, 27556), (830, 23406), (940, 20667), (996, 19505), (1245, 15604), (1410, 13778), (1660, 11703), (2490, 7802), (2820, 6889), (3901, 4980)]