19907880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7213}}^1$

素因数の和:7250

約数の個数: 64

約数和(自身を含む): 62328960

約数和(自身を除く): 42421080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7213, 14426, 21639, 28852, 36065, 43278, 57704, 72130, 86556, 108195, 144260, 165899, 173112, 216390, 288520, 331798, 432780, 497697, 663596, 829495, 865560, 995394, 1327192, 1658990, 1990788, 2488485, 3317980, 3981576, 4976970, 6635960, 9953940, 19907880]

約数ペア:

[(1, 19907880), (2, 9953940), (3, 6635960), (4, 4976970), (5, 3981576), (6, 3317980), (8, 2488485), (10, 1990788), (12, 1658990), (15, 1327192), (20, 995394), (23, 865560), (24, 829495), (30, 663596), (40, 497697), (46, 432780), (60, 331798), (69, 288520), (92, 216390), (115, 173112), (120, 165899), (138, 144260), (184, 108195), (230, 86556), (276, 72130), (345, 57704), (460, 43278), (552, 36065), (690, 28852), (920, 21639), (1380, 14426), (2760, 7213)]