777729550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{2969}}^1$

素因数の和:3038

約数の個数: 72

約数和(自身を含む): 1617485760

約数和(自身を除く): 839756210

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 169, 310, 325, 338, 403, 650, 775, 806, 845, 1550, 1690, 2015, 2969, 4030, 4225, 5239, 5938, 8450, 10075, 10478, 14845, 20150, 26195, 29690, 38597, 52390, 74225, 77194, 92039, 130975, 148450, 184078, 192985, 261950, 385970, 460195, 501761, 920390, 964925, 1003522, 1196507, 1929850, 2300975, 2393014, 2508805, 4601950, 5017610, 5982535, 11965070, 12544025, 15554591, 25088050, 29912675, 31109182, 59825350, 77772955, 155545910, 388864775, 777729550]

約数ペア:

[(1, 777729550), (2, 388864775), (5, 155545910), (10, 77772955), (13, 59825350), (25, 31109182), (26, 29912675), (31, 25088050), (50, 15554591), (62, 12544025), (65, 11965070), (130, 5982535), (155, 5017610), (169, 4601950), (310, 2508805), (325, 2393014), (338, 2300975), (403, 1929850), (650, 1196507), (775, 1003522), (806, 964925), (845, 920390), (1550, 501761), (1690, 460195), (2015, 385970), (2969, 261950), (4030, 192985), (4225, 184078), (5239, 148450), (5938, 130975), (8450, 92039), (10075, 77194), (10478, 74225), (14845, 52390), (20150, 38597), (26195, 29690)]