427860140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{3989}}^1$

素因数の和:4202

約数の個数: 48

約数和(自身を含む): 933085440

約数和(自身を除く): 505225300

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 173, 310, 346, 620, 692, 865, 1730, 3460, 3989, 5363, 7978, 10726, 15956, 19945, 21452, 26815, 39890, 53630, 79780, 107260, 123659, 247318, 494636, 618295, 690097, 1236590, 1380194, 2473180, 2760388, 3450485, 6900970, 13801940, 21393007, 42786014, 85572028, 106965035, 213930070, 427860140]

約数ペア:

[(1, 427860140), (2, 213930070), (4, 106965035), (5, 85572028), (10, 42786014), (20, 21393007), (31, 13801940), (62, 6900970), (124, 3450485), (155, 2760388), (173, 2473180), (310, 1380194), (346, 1236590), (620, 690097), (692, 618295), (865, 494636), (1730, 247318), (3460, 123659), (3989, 107260), (5363, 79780), (7978, 53630), (10726, 39890), (15956, 26815), (19945, 21452)]