20980380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 63334656

約数和(自身を除く): 42354276

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 67, 68, 85, 102, 134, 170, 201, 204, 255, 268, 307, 335, 340, 402, 510, 614, 670, 804, 921, 1005, 1020, 1139, 1228, 1340, 1535, 1842, 2010, 2278, 3070, 3417, 3684, 4020, 4556, 4605, 5219, 5695, 6140, 6834, 9210, 10438, 11390, 13668, 15657, 17085, 18420, 20569, 20876, 22780, 26095, 31314, 34170, 41138, 52190, 61707, 62628, 68340, 78285, 82276, 102845, 104380, 123414, 156570, 205690, 246828, 308535, 313140, 349673, 411380, 617070, 699346, 1049019, 1234140, 1398692, 1748365, 2098038, 3496730, 4196076, 5245095, 6993460, 10490190, 20980380]

約数ペア:

[(1, 20980380), (2, 10490190), (3, 6993460), (4, 5245095), (5, 4196076), (6, 3496730), (10, 2098038), (12, 1748365), (15, 1398692), (17, 1234140), (20, 1049019), (30, 699346), (34, 617070), (51, 411380), (60, 349673), (67, 313140), (68, 308535), (85, 246828), (102, 205690), (134, 156570), (170, 123414), (201, 104380), (204, 102845), (255, 82276), (268, 78285), (307, 68340), (335, 62628), (340, 61707), (402, 52190), (510, 41138), (614, 34170), (670, 31314), (804, 26095), (921, 22780), (1005, 20876), (1020, 20569), (1139, 18420), (1228, 17085), (1340, 15657), (1535, 13668), (1842, 11390), (2010, 10438), (2278, 9210), (3070, 6834), (3417, 6140), (3684, 5695), (4020, 5219), (4556, 4605)]