30781900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{953}}^1$

素因数の和:1003

約数の個数: 72

約数和(自身を含む): 74526480

約数和(自身を除く): 43744580

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 50, 68, 76, 85, 95, 100, 170, 190, 323, 340, 380, 425, 475, 646, 850, 950, 953, 1292, 1615, 1700, 1900, 1906, 3230, 3812, 4765, 6460, 8075, 9530, 16150, 16201, 18107, 19060, 23825, 32300, 32402, 36214, 47650, 64804, 72428, 81005, 90535, 95300, 162010, 181070, 307819, 324020, 362140, 405025, 452675, 615638, 810050, 905350, 1231276, 1539095, 1620100, 1810700, 3078190, 6156380, 7695475, 15390950, 30781900]

約数ペア:

[(1, 30781900), (2, 15390950), (4, 7695475), (5, 6156380), (10, 3078190), (17, 1810700), (19, 1620100), (20, 1539095), (25, 1231276), (34, 905350), (38, 810050), (50, 615638), (68, 452675), (76, 405025), (85, 362140), (95, 324020), (100, 307819), (170, 181070), (190, 162010), (323, 95300), (340, 90535), (380, 81005), (425, 72428), (475, 64804), (646, 47650), (850, 36214), (950, 32402), (953, 32300), (1292, 23825), (1615, 19060), (1700, 18107), (1900, 16201), (1906, 16150), (3230, 9530), (3812, 8075), (4765, 6460)]